Waec Mathematics Past Questions and Answers

Question 1546:

• WAEC 2014

F x varies inversely as y and y varies directly as Z, what is the relationship between x and z?

A. X \(\alpha\) z
B. X \(\alpha \frac{1}{z}\)
C. X \(\alpha z^2\)
D. X \(\alpha \frac{1}{z^2}\0

Question 1547:

• WAEC 2014

Find the gradient of the line joining the points (2, -3) and 2, 5)

A. 9
B. 1
C. 2
D. Undefined

Question 1548:

• WAEC 2014

If (x - a) is a factor pf bx - ax + x², find the other factor.

A. (x + b)
B. (x - b)
C. (a + b)
D. (a - b)

Question 1549:

• WAEC 2014

\(\begin{array}{c|c}height & 2 & 3 & 4 & 5 & 6 \\ \hline frequency & 2 & 4 & 5 & 3 & 1
\end{array}\)
The table shows the distribution of the height of plants in a nursery. Calculate the mean height of the plants.

A. 3.8
B. 3.0
C. 2.8
D. 2.3

Question 1550:

• WAEC 2014

The area of a sector a circle with diameter 12cm is 66cm². If the sector is folded to form a cone, calculate the radius of the base of the cone [Take \(\pi = \frac{22}{7}\)]

A. 3.0cm
B. 3.5cm
C. 7.0cm
D. 7.5cm