waec-mathematics-2020

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50 questions

The dimensions of a rectangular base of a right pyramid are ...
The dimensions of a rectangular base of a right pyramid are 9 cm by 5 cm. It the volume of the pyramid is 105 cm3, how high is the pyramid.
1 month ago 1 answer(s) 4 votes

Simplify: a/b - b/a - c/b
Simplify: a/b - b/a - c/b A. a-b+c / ab B. ab-bc-ac / ab C. a2-b2+ac / ab D. a2-b2
1 month ago 1 answer(s) 3 votes

A fence 2.4m tall, is 10 m away from a tree of height 16 m. ...
A fence 2.4m tall, is 10 m away from a tree of height 16 m. calculate the angle of elevation of the top of the tree from the top of the fence A. 76.1...
1 month ago 1 answer(s) 2 votes

In the diagram, XYZ is an equilateral triangle of side 6 cm ...
1 month ago 1 answer(s) 3 votes

The length of an arc of a circle of radius 3.5 cm is 1 19/36...
The length of an arc of a circle of radius 3.5 cm is 1 19/36 cm. Calculate, correct to the nearest degree, the angle subtended by the a...
1 month ago 1 answer(s) 3 votes

﻿In the diagram, MN || PQ, ∠MNP = 2x and ∠NPQ = (3x - ...
1 month ago 1 answer(s) 2 votes

In the diagram, PU // SR, PS // TR, QS // UR, |UR| = 15 cm, ...
1 month ago 1 answer(s) 3 votes

The mean of the numbers 15, 21, 17, 26, 18 and 29 is 21. Cal...
The mean of the numbers 15, 21, 17, 26, 18 and 29 is 21. Calculate the standard deviation. A. 9 B. 6 C. 5 D. 0
1 month ago 1 answer(s) 3 votes

If the ball is selected at random, what is the probability t...
A box contains 12 identical balls of which 5 are red, 4 blue and the rest are green. If the ball is selected at random, what is the probability that ...
1 month ago 1 answer(s) 2 votes

If two balls are selected at random one after the other with...
A box contains 12 identical balls of which 5 are red, 4 blue and the rest are green. If two balls are selected at random one after the other
1 month ago 1 answer(s) 2 votes