Waec Mathematics 1998 Past Questions and Answers

Question 26:

• WAEC 1998

Express as a single fraction: \(\frac{x}{x-2}-\frac{x+2}{x+3}\)

A. \(\frac{2x^2 - 3x - 4}{(x-2)(x+3)}\)
B. \(\frac{2x^2 + 3x - 4}{(x-2)(x+3)}\)
C. \(\frac{2}{(x-2)(x+3)}\)
D. \(\frac{ 3x + 4}{(x-2)(x+3)}\)
E. \(\frac{3x - 4}{(x-2)(x+3)}\)

Question 27:

• WAEC 1998

The following numbers represent at a set of scores for a class of 32 students, where the maximum score possible was 12, 6, 5, 9, 4, 4, 8, 7, 5, 6, 3, 2, 5, 4, 6, 9, 10, 4, 3, 2, 3, 4, 6, 8, 7, 4, 2, 1, 8, 7, 7, 6, 11. What is the percentage of the class, correct to the nearest whole number, scored above 6?

A. 34%
B. 35%
C. 37%
D. 38%
E. 50%

Question 28:

• WAEC 1998

A die with faces numbered 1 to 6 is rolled once. What is the probability of obtaining 4?

A. \(\frac{1}{36}\)
B. \(\frac{1}{6}\)
C. \(\frac{1}{3}\)
D. \(\frac{1}{2}\)
E. \(\frac{2}{3}\)

Question 29:

• WAEC 1998

In the diagram above, the area of triangle ABC is 35cm², find the value of y

A. 5cm
B. 10cm
C. 17.5cm
D. 28cm
E. 70cm

Question 30:

• WAEC 1998

The graph of the quadratic expression

A. \(y=x^2 + x - 2\)
B. \(y=x^2 - x + 2\)
C. \(y=x^2 - x - 2\)
D. \(y=x + x + 2\)
E. \(y=x^2 - 2 x - 2\)