2020 SNGS MA Prelim P2_Question Paper w Ans Key

Name: _________________________ ( ) Class:_____________ PRELIMINARY EXAMINATION GENERAL CERTIFICATE OF EDUCATION ORDINARY LEVEL MATHEMATICS 4048/02 Paper 2 Friday 21 August 2020 2 hours 30 minutes Candidates answer on the Question Paper. ______________________________________________________________________________ READ THESE INSTRUCTIONS FIRST Write your name, class, and index number on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a pencil for any diagrams or graphs. Do not use paper clips, highlighters, glue, or correction fluid. Answer all questions. If working is needed for any question, it must be shown with the answer. Omission of essential working will result in loss of marks. The use of an approved scientific calculator is expected, where appropriate. If the degree of accuracy is not specified in the question, and if the answer is not exact, give the answer to three significant figures. Give answers in degrees to one decimal place. For , use either your calculator value or 3.142, unless the question requires the answer in terms of . At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 100. Paper 1 / 80 Q1 Q4 Q7 Q10 Paper 2 /100 Q2 Q5 Q8 Q3 Q6 Q9 Total / 100 ________________________________________________________________________________ This document consists of 23 printed pages and 1 blank page [Turn Over

2 CHIJ SNGS Preliminary Examinations 2020 - Mathematics 4048/02 Mathematical Formulae Compound interest Total amount n rP      += 1001 Mensuration Curved surface area of a cone lr= Surface area of a sphere 24 r= V olume of a cone hr 2 3 1= V olume of a sphere 3 3 4 r= Area of a triangle ABC Cba sin2 1= Arc length r= , where  is in radians Sector area 2 2 1 r= , where  is in radians Trigonometry C c B b A a sinsinsin == Acbcba cos2222 −+= Statistics Mean  = f xf Standard deviation 22       −=     f xf f xf

3 CHIJ SNGS Preliminary Examinations 2020 - Mathematics 4048/02 [Turn Over 1 (a) Write as a single fraction in its simplest form 2 25 7 10 3 6 xx x x x −− ++ + + . Answer …………………………………. [3] (b) Simplify 22 2 16 9 12 9 xy x xy − − . Answer …………………………………. [2] (c) Solve the equation 12 ( 1)( 2) 8x x x =+ − − . Answer x = ………………………………. [4]

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