Mathematics 1990 Waec Past Questions and Answers

Question 11 :

• WAEC 1990

From the graph determine the roots of the equation y = 2x² + x - 6

A. -3, 4
B. -2, -6
C. -2, 1.5
D. -1, 1
E. 2, 1.5

Question 12 :

• WAEC 1990

Find the values of x for which y = 5

A. -2.5, 2.0
B. -2.6, 2.1
C. -2.0, 1.5
D. -2.0, 2.0
E. 0, 0

Question 13 :

• WAEC 1990

An arc of length 22cm subtends an angle of θ at the center of the circle. What is the value of θ if the radius of the circle is 15cm?[Take π = 22/7]

A. 70^o
B. 84^o
C. 96^o
D. 156^o
E. 168^o

Question 14 :

• WAEC 1990

Find the sum of the first five terms of the G.P 2,6, 18 ....

A. 484
B. 243
C. 242
D. 130
E. 121

Question 15 :

• WAEC 1990

Let J be the set of positive integers, If H = {x: x∈J, x\(^2\) < 3 and x ≠ 0}, then

A. H = {1}
B. H is an infinite set
C. H = {0, 1, 2}
D. H = {}
E. J ≤ H