Jamb Mathematics 2019 Past Questions and Answers

Question 41:

• JAMB 2019

If 2\(^{x + y}\) = 16 and 4\(^{x - y} = \frac{1}{32}\), find the values of x and y.

A. X = \(\frac{3}{4}\), y = \(\frac{11}{4}\)
B. X = \(\frac{3}{4}\), y = \(\frac{13}{4}\)
C. X = \(\frac{2}{3}\), y = \(\frac{4}{5}\)
D. X = \(\frac{2}{3}\), y = \(\frac{13}{4}\)

Question 42:

• JAMB 2019

Simplify \(\frac{0.0839 \times 6.381}{5.44}\) to 2 significant figures.

A. 0.2809
B. 2.51
C. 3.5
D. 0.098

Question 43:

• JAMB 2019

Find the value of x and y in the simultaneous equation: 3x + y = 21; xy = 30

A. X = 3 or 7, y = 12 or 8
B. X = 6 or 1, y = 11 or 5
C. X = 2 or 5, y = 15 or 6
D. X = 1 or 5, y = 10 or 7

Question 44:

• JAMB 2019

Points X and Y are 20km North and 9km East of point O, respectively. What is the bearing of Y from X? Correct to the nearest degree.

A. 24°
B. 56°
C. 127°
D. 156°

Question 45:

• JAMB 2019

If \(P = (\frac{Q(R - T)}{15})^{\frac{1}{3}}\), make T the subject of the formula.

A. \(T = \frac{15R - Q}{P^3}\)
B. \(T = R - \frac{15P^3}{Q}\)
C. \(T = \frac{R - 15P^3}{Q}\)
D. \(T = \frac{R + P^3}{15Q}\)