Mathematics Grade 9 November EC 2010 Memo

ASSESSMENT AND EXAMINATIONS / ASSESSMENT INSTRUMENT DEVELOPMENT AND MODERATION Bundy Park •Buffalo Road • Schornville • KING WILLIAM’S TOWN • 5601 • Private Bag 4571 • KING WILLIAM’S TOWN • 5600 • REPUBLIC OF SOUTH AFRICA • Tel: 043 604 7793 • Fax: 043 604 7789 • Customer Care line: 086 0638 636 • Ref no: 13/R* Enquiries: CY Ntlabati • Date: 22 October 2010 Email: yolisa.ntlabati@edu.ecprov.gov.za • www.ecdoe.gov.za TO: DCES – EXAMINATIONS (ALL DISTRICTS) FROM: DCES: INSTRUMENT DEVELOPMENT AND MODERATION CY NTLABATI SUBJECT: ERRATA – MATHEMATICS/WISKUNDE MEMORANDUM (GRADE 9: NOVEMBER 2010) DATE: 22 OCTOBER 2010 INTERNAL MEMORANDUM The following errata were brought to our attention upon receipt of the paper concerned from the moderator. 3.2 3.2.1 5 x−3 x ( x + 4 ) −( x−3 )( 2 x + 1) =5x-3 x 2-12x-(2x 2-5 x-3) √ =5 x-3 x 2-12 x -2x 2+5x+3 √ = -5x 2-2x+3√ (3) 3.2.2 x 2− y 2 x− y ÷ 4 a −9 b 4 a + 6 b 2 2 = (x-y)(x+y) x 2(2a+3b) √√ (2a-3b)(2a+3b) x-y =2(x+y) √ 2a-3b (3) 6.1.2 st + ( s + 120 ) t = 1869 2 st + 120 t = 1869 √ 1869 t= √ 2( s + 60 ) 934,5 t= √ s + 60 Or any other method is acceptable/Of enige ander metode is aanvaarbaar (3) Please communicate to all relevant stakeholders with all protocol observed. Sincerely, DCES: INSTRUMENT DEVELOPMENT AND MODERATION CY NTLABATI