Waec Mathematics Past Questions and Answers

Question 481:

• WAEC 1997

A student found the approximate value of 0.02548 correct to two places of decimal instead of two significant figures. Find the percentage error.

A. 0%
B. 131/3%
C. 15 5/13%
D. 2/3%
E. 20%

Question 482:

• WAEC 1997

Simplify log₃9 + log₃15 - log₃5

A. Log₃19
B. Log₃
C. 3
D. 1
E. O

Question 483:

• WAEC 1997

Solve me equation: 2/3 (x + 5) = 1/4(5x - 3)

A. 1¹/₇
B. 1⁸/₂₃
C. 3
D. 4³/₇
E. 7

Question 484:

• WAEC 1997

Which of the following equations has its roots as 4 and -5?

A. X² + 4x - 20 = 0
B. X² + x + 20 = 0
C. X² - x + 20 = 0
D. X² + x - 20 = 0
E. X² - x - 20 = 0

Question 485:

• WAEC 1997

Solve the equations: 4x -y = 11; 5x + 2y = 4.

A. X = 6, y = 13
B. X = -2, y = -3
C. X = -2, y = 3
D. X = 2, y = -3
E. X = 2, y = 3.