# Mathematics Grade 12 P1 Eastern Cape Mock 2023 Memo (Afr)

> Grade 12 Mathematics Paper 1 memorandum from the Eastern Cape Mock Exam 2023 (Afrikaans), 17 pages. Read online or download the free PDF.

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- Updated: 2026-09-27
- Subject: Mathematics
- Grade: Grade 12
- Language: Afrikaans
- Document type: Memorandum
- Year: 2023
- Exam period: Eastern Cape Mock Exam
- Paper: 1
- Curriculum: CAPS
- Pages: 17

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Mathematics · Grade 12 · Eastern Cape Mock Exam · 2023 · Afrikaans. Memorandum, 17 pages. Read online or download the PDF.

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### Page 1

NATIONAL
                   SENIOR CERTIFICATE/
               NASIONALE SENIORSERTIFIKAAT

                     GRADE/GRAAD 12

                     SEPTEMBER 2023

         MATHEMATICS P1/WISKUNDE V1
        MARKING GUIDELINE/NASIENRIGLYN

MARKS/PUNTE:   150

                     This marking guideline consists of 17 pages./
                      Hierdie nasienriglyn bestaan uit 17 bladsye.

### Page 2

2                                   MATHEMATICS P1/WISKUNDE V1                       (EC/SEPTEMBER 2023)

NOTE/LET WEL:

•   If a candidate answers a question TWICE, mark the FIRST attempt ONLY.
    Indien ŉ kandidaat ŉ vraag TWEE keer beantwoord, merk SLEGS die EERSTE poging.
•   Consistent accuracy applies in ALL aspects of the marking guideline.
    Volgehoue akkuraatheid geld deurgaans in ALLE aspekte van die nasienriglyn.
•   If a candidate crossed out an attempt of a question and did not redo the question, mark
    the crossed-out attempt.
    Indien ŉ kandidaat ŉ poging vir ŉ vraag deurgetrek het en nie die vraag weer
    beantwoord het nie, merk die poging wat deurgetrek is.
•   The mark for substitution is awarded for substitution into the correct formula.
    Die punt vir substitusie word toegeken vir substitusie in die korrekte formule.

QUESTION 1/VRAAG 1

1.1.1      x 2 + x − 30 = 0
           ( x − 5)( x + 6) = 0                                   factors / faktore
           x =5          or / of       x = −6                    x = 5  x = −6

                                     OR/OF                                                             (3)
                                                                                OR/OF
               −b  b 2 − 4ac
            x=
                    2a
                −1  (1) 2 − 4(1)(−30)
              =
                         2(1)                                     substitution / vervanging
                −1  121
              =
                     2
              = 5 or / of − 6
                                                                  x = 5  x = −6
                                                                                                       (3)
1.1.2       x(2 x − 6) = −3
            2x2 − 6x + 3 = 0                                      standard form / standaardvorm
                  −b  b 2 − 4ac
            x=
                       2a
                  −(−6)  (−6) 2 − 4(2)(3)
              =                                                   substitution / vervanging
                           2(2)
                6  12              3 3
              =             OR / OF
                   4                  2
              = 2,37 or / of 0, 63                                x = 2,37 or/of  x = 0,63
                                                                                                       (4)
1.1.3      𝑥 2 − 2𝑥 + 1 > 0

           (𝑥 − 1)(𝑥 − 1) > 0                                     factors / faktore
                                                                 𝑥 ∈ ℝ, 𝑥 ≠ 1
           𝑐/𝑣: 𝑥 = 1
           ∴ 𝑥 ∈ ℝ, 𝑥 ≠ 1                                         (Accuracy/Akkuraatheid)
                                                                                                       (3)

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### Page 3

(EC/SEPTEMBER 2023)                            MATHEMATICS P1/WISKUNDE V1                                               3

 1.1.4       2x −1 = 4 − 5x

                                   (            )
                                                    2
             (2 x − 1) 2 =             4 − 5x                                   squaring both sides
                                                                                 kwadreer beide kante
             (2 x − 1) 2 = 4 − 5 x
             4 x2 − 4 x + 1 + 5x − 4 = 0
             4x2 + x − 3 = 0                                                     standard form / standaardvorm
                                                             −1 (1)2 −4(4)(−3)  factors / formula
             (4 x − 3)( x + 1) = 0               or / of x =
                                                                    2(4)         faktore / formule
                                                                                answers with selection
              x = 34 or / of x  −1                                             antwoorde met seleksie/keuse
                                                                                                             (4)
 1.2         y − 2 x = −1......................................(1)
             y 2 + 2 xy = 3x 2 .................................(2)
             y = 2 x − 1.........................................(3)            y = 2 x −1

             Substitute / Vervang (3) into/in (2) :
             (2 x − 1) 2 + 2 x(2 x − 1) − 3 x 2 = 0                             substitution / vervanging
             4 x − 4 x + 1 + 4 x − 2 x − 3x = 0
                   2                       2               2

             5x2 − 6 x + 1 = 0                                                  standard form / standaardvorm
             (5 x − 1)( x − 1) = 0                                              factors / faktore
              x = or / of x = 1
                       1
                       5                                                        x-values / x-waardes
             y =−             3
                               5             or / of      y =1                  y-values / y-waardes
                                                                                                                   (6)
                                                        OR/OF                                 OR/OF

             y − 2 x = −1.......................................(1)
                                                                                     y +1
              y 2 + 2 xy = 3 x 2 .................................(2)          x=
                                                                                       2
                   y +1
             x=         ...........................................(3)
                     2
             Substitute / Vervang (3) into / in ( 2 )
                                                          2
                      y +1   y +1 
             y + 2y
               2
                             − 3       =0                                    substitution / vervanging
                      2   2 
                             y2 + 2 y +1 
             y2 + y2 + y − 3             =0
                                  4                                           standard form / standaardvorm
             8y + 4 y − 3y − 6 y − 3 = 0
                   2                   2
                                                                                factors / faktore
             5 y2 − 2 y − 3 = 0                                                 y-values / y-waardes
             (5 y + 3)( y − 1) = 0                                              x-values / x-waardes
             y =−         3
                           5       or / of       y =1
             x =      1
                       5           or / of      x =1                                                               (6)

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### Page 4

4                                 MATHEMATICS P1/WISKUNDE V1                         (EC/SEPTEMBER 2023)

    1.3      2 x 2 − px + 1 = 0
             For real unequal roots: Vir ongelykereële wortels :
                                                                    b2 − 4ac  0
             b 2 − 4ac  0
             (− p ) 2 − 4(2)(1)  0
                                                                    substitution / vervanging
              p2 − 8  0
                                                                    standard form / standaardvorm
              p  − 8 or / of          p− 8
                                                                     answer / antwoord

                                                                                                       (5)
                                                                                                      [25]

    QUESTION 2/VRAAG 2

    2.1.1    a + 9d = 21                                            a + 9d = 21
             a + 16d = 49                                           a + 16d = 49
             −7d = −28
                  d =4
                                                                    value of d / waarde van d        (3)
    2.1.2    a + 9(4) = 21
                                                                    a = −15
                     a = −15
             T18 = T17 + 4
                = 49 + 4
                = 53                                                T18 = 53
              T1 + T18
             = −15 + 53
             = 38                                                   answer / antwoord                (3)
    2.2.1    T1 = 4(1) − 19 = −15
             T2 = 4(2) − 19 = −11                                   all three terms / al drie terme
             T3 = 4(3) − 19 = −7                                                                       (1)
    2.2.2    Sn = [2a + (n − 1)d ]
                   n
                   2
                                                                    substitution / vervanging
             Sm = m2 [2(−15) + 4(m − 1)]                             and/en = 1 189

             1189 = m2 (−30 + 4m − 4)                               standard form / standaardvorm
                 0 = 2m2 − 17m − 1189                               method / metode
             (2m + 41)(m − 29) = 0                or / of
                −(−17)  (−17) 2 − 4(2)(−1189)
             m=
                            2(2)
              m = 29 or / of         m  − 412                     answer / antwoord
                                                                                                       (4)

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### Page 5

(EC/SEPTEMBER 2023)                     MATHEMATICS P1/WISKUNDE V1                                             5

 2.3.1       −78                − 76           − 72            − 66
                                                                       both answers / beide
                        2                4                 6          antwoorde

                                   2               2
             – 58 ; – 48                                                                                (1)
 2.3.2       Tn = an 2 + bn + c
             2a = 2             3a + b = 2 a + b + c = −78
              a =1              3(1) + b = 2 1 − 1 + c = −78           a =1
                                       b = −1        c = −78           b = −1  c = −78
             Tn = n − n − 78
                            2
                                                                       answer / antwoord
                                                                                                        (4)
 2.3.3       k  78                                                    answer / antwoord
             (Accept/Aanvaar k  78)                                                                    (2)
                                                                                                       [18]

 QUESTION 3/VRAAG 3

 3.1                        a = 81 ......................(1)
                a + ar 2 = 117 ...........(2)
                                                                        a + ar 2 = 117

               ( )
              a 1 + r 2 = 117
                                                                       substitution / vervanging
             81(1 + r ) = 117
                        2

                             117
                   1+ r2 =                                             simplification /
                              81
                                                                       vereenvoudiging
                             36
                        r2 =
                             81
                               2
                         r=
                               3                                       answer / antwoord

                                                                                                        (4)
 3.2.1           9  x
             r=
                 3x
                 32 x
               = x
                 3
                                                                       answer / antwoord
               = 3x
                                                                                                        (3)

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### Page 6

6                                MATHEMATICS P1/WISKUNDE V1                     (EC/SEPTEMBER 2023)

    3.2.2           a
             S =
                  1− r
             1     3x                                          a = 3x & r = 3x
               =
             2 1 − 3x
             2.3x = 1 − 3x                                     substitution / vervanging
             3.3x = 1
                    1
               3x =
                    3
               3 = 3−1
                x

              x = −1                                          answer / antwoord
                                                                                                (3)
                                                                                                [8]

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### Page 7

(EC/SEPTEMBER 2023)                  MATHEMATICS P1/WISKUNDE V1                                               7

 QUESTION 4/VRAAG 4

 4.1                       2
              f ( x) =        +3                                       x=5
                         x −5
                                                                       y =3
              x=5
              y =3                                                                                       (2)
 4.2         𝑦 ∈ ℝ but/maar y  3
                                                                       y3
                                                                                                         (1)
 4.3                      2
              f ( x) =        +3
                        x−5
              x − intercept / x − afsnit:
                   2                                                   substitution / vervanging
                        +3= 0
                 x −5
                       2
                            = −3
                     x −5
                   − 3 x + 15 = 2
                           x = 133                                     x = 133
              y − intercept / y − afsnit:
                           2
                    y=        +3
                        0−5
                     = 135                                             y = 135
              Intercepts/Afsnitte :( 133 ;0) and / en ( 0; 135 )
                                                                                                         (3)
 4.4
                                                                       asymptotes / asimptote

                                                                       y-intercept / y-afsnit

                                                                       x-intercept / x-afsnit

                                                                       shape and quadrants
                                                                        vorm en kwadrante

                                                                                                         (4)
 4.5         f is reflected in the x-axis and shifted 2 units
             downwards. f is gereflekteer in die x-as en 2
             eenhede afwaarts geskuif.                                 f(x) reflected / gereflekteer

                                        OR/OF                          in the x-axis / in die x-as

             f is shifted 2 units upwards and then reflected in the    shift 2 units / skuif 2 eenhede
             x-axis.                                                    downwards/upwards
             f is 2 eenhede opwaarts geskuif en daarna                  afwaarts/opwaarts
             gereflekteer in die x-as.
                                                                                                        (3)
             –                                                                                         [13]

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### Page 8

8                                MATHEMATICS P1/WISKUNDE V1                   (EC/SEPTEMBER 2023)

 QUESTION 5/VRAAG 5

    5.1       f ( x) = log b x
             x = by
             9 = b −2                                          substitution / vervanging
                   1
             b2 =
                   9
                 1                                             answer / antwoord
             b=
                 3                                                                                   (2)
    5.2      y = log 1 x
                        3

             x = log 1 y                                       swopping x and y
                        3

                                                                omruil van x en y
                            x
                 1
             y =   OR/OF y = 3− x                            answer / antwoord
                  3                                                                                (2)
    5.3                                                         answer (Accuracy)
             0  x 1                                             antwoord (Akkuraatheid)
                                                                                                     (2)
    5.4      y=0                                                answer (Accuracy)
                                                                  antwoord (Akkuraatheid)
                                                                                                     (2)
                                                                                                     [8]

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### Page 9

(EC/SEPTEMBER 2023)                   MATHEMATICS P1/WISKUNDE V1                                              9

QUESTION 6/VRAAG 6

6.1         f ( x) = x 2 − 6 x + 11
                  = x 2 − 6 x + 9 − 9 + 11                                completing the square
                                                                           vierkantsvoltooiing
                  = ( x − 3) 2 + 2
                                                                          ( x − 3)2 + 2
            At TP : x = 3 and / en y = 2                                 values for x and y
                                                                            waardes van x en y
                                          OR/OF

            f ( x) = x 2 − 6 x + 11
                    b       (−6)
            x=−         =−                                                substitution / vervanging
                   2a        2(1)
              =3                                                          value of x / waarde van x
            y = 3 − 6(3) + 11
                      2
                                                                          substitution / vervanging
               =2                                                         value of y / waarde van y
            At TP : x = 3 and / en y = 2                                                              (4)
6.2           mg = tan 63, 44   o
                                                                          mg = 2
                  =2
            y − 2 = 2( x − 3)                                             substitution / vervanging
                y = 2x − 4                                                equation of g /
                                                                         vergelyking van g
                                                                                                       (3)
6.3         f ( x) = g ( x)
            x 2 − 6 x + 11 = 2 x − 4         CA only if g is linear       equating / gelyk stel
                                             VA slegs as g linieêr is
           x − 8 x + 15 = 0
             2
                                                                          standard form /
           ( x − 3)( x − 5) = 0                                          standaardvorm
           x = 3 or / of x = 5
            y = 2(5) − 4                                                 x values / x-waardes
                =6
            S (5 ; 6)
                                                                          S coordinates / S-
                                                                         koördinate
                                                                                                       (4)

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### Page 10

10                                  MATHEMATICS P1/WISKUNDE V1                       (EC/SEPTEMBER 2023)

 6.4.1       1 x  5                                        answer / antwoord
                                                                                                       (2)
 6.4.2       k  −2                                          answer / antwoord
                               Accept / Aanvaar k  −2
                               for 1 mark / vir 1 punt
                                                                                                      (2)
                                                                                                     [15]

 QUESTION 7/VRAAG 7

 7.1          A = P(1 + i ) n
                                               4n
                               0, 091                      0,091
                                                                4
             166 433 = 97 000 1 +     
                                  4                        substitution into correct formula
             166 433  4 091 
                                      n                       vervanging in korrekte formule
                     =           
              97 000  4 000 
                                 166 433
                  4n = log 4091
                            4000
                                  97 000                     correct use of logs
                     = 24                                     korrekte gebruik van logs
                    n = 6 years / jaar
                                                             answer / antwoord
                                                                                                       (4)
 7.2.1        A = P (1 − i )   n

                = 482000(1 − 0,147) 5                        substitution into correct formula
                                                              vervanging in korrekte formule
                = R 217666,80                                answer / antwoord

                                                                                                       (2)
 7.2.2        A = P(1 + i )    n

                = 482 000 (1 + 0, 081)
                                          5

                                                             substitution into correct formula
                = R 711500,99                                 vervanging in korrekte formule
                                                             answer / antwoord
                                                                                                       (2)

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### Page 11

(EC/SEPTEMBER 2023)               MATHEMATICS P1/WISKUNDE V1                                                       11

 7.2.3       Required amount / Bedrag benodig:
             = R 711 501 − R 217 666,80
             = R 493 834, 20                                              amount / bedrag

                 x[(1 + i ) n − 1]                                        correct formula /
             F=                                                            korrekte formule
                        i
                                  0, 073 60 
                               x  1 +         − 1                                               0,073
                                      12             0, 073       n = 60 and / en i =
                                                                                                     12
             493834, 20 =                                 1 +       
                                        0, 073                  12         
                                                                                   0, 073 
                                                                                             60 
                                                                           x  1 +         − 1
                                          12                                      12       
                                                                                                
                                                      0, 073                        0, 073
                                      493 834, 20                                     12
                    x =                                 12

                                                                                 12 )
                                                                              ( 0,073
                               0, 073 60   0.073                     1+
                               1 +          − 1 1 +           
                                     12                 12 

                          = R6 803, 01
                                                                          answer / antwoord
                                                                                                                 (6)
                                                                                                                [14]

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### Page 12

12                                   MATHEMATICS P1/WISKUNDE V1                            (EC/SEPTEMBER 2023)

 QUESTION 8/VRAAG 8

 8.1          f ( x) = 1 − x 2
                             f ( x + h) − f ( x )
              f / ( x) = lim
                       h →0           h
                            1 − ( x + h) 2 − (1 − x 2 )
                     = lim                                             substitution / vervanging
                       h →0              h
                            1 − x − 2 xh − h 2 − 1 + x 2
                                   2
                                                                       expansion / uitbreiding
                     = lim
                       h →0                h
                            −2 xh − h   2
                     = lim                                             simplification / vereenvoudiging
                       h →0        h
                            h(−2 x − h)
                     = lim                                             factorisation / faktorisering
                       h →0        h
                     = lim( −2 x − h)
                        h →0                                           answer / antwoord
                     = −2 x                                                                                (5)
                                                                                      OR/OF
                                           OR/OF
              f ( x) = 1 − x 2
                                                                       substitution / vervanging
              f ( x + h) − f ( x) = 1 − ( x + h) 2 − (1 − x 2 )
                                   = 1 − x 2 − 2 xh − h 2 − 1 + x 2
                                                                       expansion / uitbreiding
                                    = −2 xh − h 2
                              f ( x + h) − f ( x )                     simplification / vereenvoudiging
              f / ( x) = lim
                         h →0          h
                              −2 xh − h 2                              factorisation / faktorisering
                       = lim
                         h →0      h
                              h(−2 x − h)                              answer / antwoord
                       = lim
                         h →0       h                                                                      (5)
                       = lim(−2 x − h)
                        h →0

                     = − 2x
 8.2.1              1 
                         2
                                       1                             Dx ( x 2 + x −2 − 2 )
             Dx  x −   = Dx  x 2 + 2 − 2 
                   x            x      
                                                                      
                                       (
                                 = Dx x + x − 2
                                           2      −2
                                                       )              2x and / en constant/konstante is 0
                                                                       − 2x −3                  (3)
                                 = 2 x − 2 x −3
 8.2.2          x5   2
              y=   −
               10     x                                                     −1
                1       −1
                                                                       2x 2
              = x5 − 2 x 2
               10                                                                    −3
              dy 1       −3
                                                                       12 x 4  x 2
              = x4 + x 2                                                                                  (3)
              dx 2
                                                                                                          [11]

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### Page 13

(EC/SEPTEMBER 2023)                       MATHEMATICS P1/WISKUNDE V1                                     13

 QUESTION 9/VRAAG 9

 9.1      f ( x) = −2 x 3 + ax 2 + bx + c.
         9 = −2(2)3 + a(2) 2 + b(2) − 3
         9 = −16 + 4a + 2b − 3
                     4a + 2b = 28.........................(1)           equation 1 / vergelyking 1
         At TP / By DP : −6 x + 2ax + b = 0
                                      2

                            − 6(2) 2 + 2a(2) + b = 0                    f '( x) = −6 x 2 + 2ax + b
                                          4a + b = 24......(2)          equation 2 / vergelyking 2

                            4a + 2b = 28
                            4a + b = 24
                                                                        value of b / waarde van b
         (1) − (2)              b= 4

                            4a + 4 = 24
                               4a = 20
                                                                        value of a / waarde van a
                                 a=5
                                                                                                        (5)
 9.2      f ( x) = −2 x + 5 x + 4 x − 3
                        3        2

          f '( x) = −6 x 2 + 10 x + 4                                   f '( x) = 0
         At/By E : −6 x 2 + 10 x + 4 = 0
                         3x 2 − 5 x − 2 = 0
                       (3x + 1)( x − 2) = 0
                                                                        values of x / waarde van x
                  x = − 13      or / of     x=2
          y = −2(− 13 )3 + 5(− 13 ) 2 + 4(− 13 ) − 3
               100
            =−
                27                                                      both coordinates /
          E ( − 13 ; − 100
                         27 )                                            beide koördinate
                                                                                                        (3)
 9.3.1           1                                                              1
         x−       or / of           x2                                x−
                 3                                                              3
                                                                        x2
                                                                                                        (2)

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### Page 14

14                                  MATHEMATICS P1/WISKUNDE V1                  (EC/SEPTEMBER 2023)

 9.3.2    f '' ( x ) = −12 x + 10                                 f '' ( x ) = −12 x + 10
         −12 x + 10 = 0
                  5
             x=                                                   value of x / waarde van x
                  6
               5
         x                                                      answer / antwoord
               6                                                                                  (3)
                                      OR/OF
                b                                                             OR/OF
         x=−
               3a
                  5
           =−
               3( −2)                                             substitution / vervanging
             5
           =                                                      value of x / waarde van x
             6
                   5
            x                                                   answer / antwoord
                   6
                                                                                                  (3)
 9.4      f '( x) = −6 x + 10 x + 4
                        2
                                                                  f '( x) = −6 x + 10 x + 4
                                                                                  2

         m = f '(−1) = −6(−1) 2 + 10(−1) + 4
                      = −12                                      m
          y = −12 x + c
           0 = −12(−1) + c
          c = −12                                                 substitution / vervanging
         y = −12 x − 12
                                                                  answer / antwoord
                                                                                                 (4)
                                                                                                [17]

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### Page 15

(EC/SEPTEMBER 2023)                   MATHEMATICS P1/WISKUNDE V1                                     15

 QUESTION 10/VRAAG 10

 10.1

         3x 2 + 2 xy + 6 xy = 147
         3x 2 + 8 xy = 147                                                3x 2 + 2 xy + 6 xy = 147
                 147 − 3x 2                                               simplifying /
         y =               .                                            vereenvoudiging
                    8x
                                                                                                    (2)
 10.2    V = lbh
           = 3 x.x. y                                                     3x.x. y

                     147 − 3 x 2                                        substitution /
             = 3x 2              
                        8x                                             vervanging
                            3
                441x 9 x
             =         −
                  8       8

                     441 27 x 2
         V '( x) =      −                                                 V '( x) = 0
                      8   8

             441 27 x 2
               −        =0
              8    8                                                      simplification /
                  27 x 2 = 441                                           vereenvoudiging
                           441
                     x2 =
                            27
                            21                                            answer / antwoord
                      x=               ( = 4, 04 )                                                  (5)
                           3 3
                                                                                                    [7]

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### Page 16

16                               MATHEMATICS P1/WISKUNDE V1                              (EC/SEPTEMBER 2023)

 QUESTION 11/VRAAG 11

                                        WATCH SOCCER/              WATCH RUGBY/ TOTAL/
                                         KYK SOKKER                 KYK RUGBY   TOTAAL
                     Female / Vroulik         72                         a        120
                     Male / Manlik            54                        36         90
                     Total / Totaal            b                        84        210
 11.1.1     a = 48
                                                                           a = 48
            b = 126
                                                                           b = 126
                                                                                                           (2)
 11.1.2                          72
             P( F and/enWS ) =
                                 210                                       answer / antwoord
                                                                                                           (2)
 11.1.3     (For independent events) / (Vir onafhanklike gebeurtenisse)
            P( M )  P( R) = P( M and / en R)

                            90 84
             P( M )  P( R) =   
                            210 210                                           90 84
                                                                                
                             6                                                210 210
                          =
                            35
                            0,17                                           answer / antwoord
                                36
            P( M and / en R) =
                               210
                                                                              36
                           6                                              
                        =                                                     210
                          35
             The events are independent
              Die gebeurtenisse is onafhanklik                             conclusion /
                                                                            gevolgtrekking
                                                                                                                (4)
 11.2.1
                26       25      24     10       9       8
                                                                           method / metode
            26 x 25 x 24 x 10 x 9 x 8                                      answer / antwoord
            = 11 232 000                                                                                   (2)

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### Page 17

(EC/SEPTEMBER 2023)              MATHEMATICS P1/WISKUNDE V1                                         17

 11.2.2       5 x 25 x 24 x 9 x 8 x 3                              5  25  24
              = 648 000                                            98 3

              P(Vowel / Factor of 9) / P(Vokaal / Faktor van 9)
                 648000
             =
               11232 000                                           11232 000 as denominator /
                3                                                   as noemer
             =
               52
                                                                   answer / antwoord

                                                                                                 (4)

                                                                    TOTAL/TOTAAL:               150

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