Mathematics 2015 Waec Past Questions and Answers

Question 21 :

• WAEC 2015

\(\begin{array}{c|c}
x & 0 & 1\frac{1}{2} & 2 & 4\\
\hline
y & 0 & 5\frac{1}{2} & &
\end{array}\)
The table given shows some values for a linear graph. Find the gradient of the line

A. 1
B. 2
C. 3
D. 4

Question 22 :

• WAEC 2015

PQRT is square. If x is the midpoint of PQ, Calculate correct to the nearest degree, LPXS

A. 53^o
B. 55^o
C. 63^o
D. 65^o

Question 23 :

• WAEC 2015

The angle of elevation of an aircraft from a point K on the horizontal ground 30\(\alpha\). If the aircraft is 800m above the ground, how far is it from K?

A. 400.00m
B. 692.82m
C. 923.76m
D. 1,600.99m

Question 24 :

• WAEC 2015

The population of students in a school is 810. If this is represented on a pie chart, calculate the sectoral angle for a class of 7 students

A. 32^o
B. 45^o
C. 60^o
D. 75^o

Question 25 :

• WAEC 2015

The scores of twenty students in a test are as follows: 44, 47, 48, 49, 50, 51, 52, 53, 53, 54, 58, 59, 60, 61, 63, 65, 67, 70, 73, 75. Find the third quartile.

A. 62
B. 63
C. 64
D. 65