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Mathematics 2008 Waec Past Questions and Answers

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Mathematics 2008 Waec Past Questions


Question 11 :



Factorize 5y2 + 2ay - 3a2

A. (a - y)(5y - 3a)
B. (y - a)(5y - 3a)
C. (y - a)(5y + 3a)
D. (y + a)(5y - 3a)


Question 12 :



If 4y is 9 greater than the sum of y and 3x, by how much is greater than x?

A. 3
B. 6
C. 9
D. 12


Question 13 :



If p = \(\frac{3}{5} \sqrt{\frac{q}{r}}\), express q in terms of p and r

A. \(\frac{9}{25} pr^2\)
B. \(\frac{9}{25} p^2r\)
C. \(\frac{25}{9} p^2r\)
D. \(\frac{25}{9} pr^2\)


Question 14 :



Simplify: \(\frac{2x^2 - 5x - 12}{4x^2 - 9}\)

A. \(\frac{x + 4}{2x + 3}\)
B. \(\frac{x + 4}{2x - 3}\)
C. \(\frac{x - 4}{2x + 3}\)
D. \(\frac{x - 4}{2x - 3}\)


Question 15 :



PQR is a sector of a circle centre O, radius 4cm. If PQR = 30o, find, correct to 3 significant figures, the area of sector PQR. [Take \(\pi = \frac{22}{7}\)]

A. 4.19cm2
B. 8.38cm2
C. 10.5cm2
D. 20.9cm2






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