How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.
Solve the equations: 4x -y = 11; 5x + 2y = 4.
x = 6, y = 13
x = -2, y = -3
x = -2, y = 3
x = 2, y = -3
x = 2, y = 3.
Correct answer is D
4x - y = 11....(1) x 2 8x - 2y = 22....(3)
5x + 12y = 4....(2) x 1 5x + 2y = 4....(4)
add eqn (3) and (4)
13x = 26
x = 2
4(2) - y = 11 ⟹⟹ y = 8 - 11
y = -3.
Which of the following equations has its roots as 4 and -5?
x2 + 4x - 20 = 0
x2 + x + 20 = 0
x2 - x + 20 = 0
x2 + x - 20 = 0
x2 - x - 20 = 0
Correct answer is D
(x - 4)(x + 5) = 0
x\(^2\) + 5x - 4x - 20 = 0
x\(^2\) + x - 20 = 0
Solve me equation: 2/3 (x + 5) = 1/4(5x - 3)
11/7
18/23
3
43/7
7
Correct answer is E
2/3 (x + 5) = 1/4(5x - 3)
8x + 40 = 15x - 9
-7x = -49
x = 7
Simplify log39 + log315 - log35
log319
log3
3
1
Correct answer is C
0%
131/3%
15 5/13%
2/3%
20%
Correct answer is E
0.02548 \(\approxeq\) 0.03 (to 2 decimal places)
0.02548 \(\approxeq\) 0.025 (2 sig. figs)
Error = 0.03 - 0.025
= 0.005
% error = \(\frac{0.005}{0.025} \times 100%\)
= 20%