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Mathematics Past Questions and Answers

Waec Mathematics Questions

Question 321:

Simplify \(\frac{2.25}{0.015}\) leaving your answer in standard form

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A 1.5 x 10^-4
B 1.5 x 10^-2
C 1.5 x 10^-3
D 1.5 x 10¹
E 1.5 x 10²

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Question 322:

State the fifth and seventh terms of the sequence \(-2, -3, -4\frac{1}{2}, ...\)

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A \(-\frac{81}{8}, -\frac{729}{32}\)
B \(\frac{8}{81}, \frac{72}{39}\)
C \(\frac{27}{729}, \frac{718}{39}\)
D \(-\frac{27}{16}, -\frac{79}{81}\)
E \(-\frac{21}{8}, \frac{32}{618}\)

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Question 323:

A plane tiles 90km on a bearing 030° and then flies 150km due east.

How far east of the starting point is the plane?

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A 120km
B 165km
C 195km
D (150 + 45√3)km
E 240km

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Question 324:

If sin x = cos 50^o, then x equals

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A 40^o
B 45^o
C 50^o
D 90^o
E 130^o

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Question 325:

From a point on the edge of the sea, one ship is 24km away on a bearing S 50^oE and another ship is 7km away on a bearing S40^oW. How far apart are the ships?

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A 20km
B 24km
C 25km
D 31km
E 84km

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