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Mathematics Past Questions and Answers

Waec Mathematics Questions

Question 1181:

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

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A 3
B 6
C 9
D 12

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Question 1182:

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

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

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Question 1183:

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

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

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Question 1184:

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

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

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Question 1185:

If the volume of a cube is 343cm³, find the length of its side

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A 3cm
B 6cm
C 7cm
D 96cm

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