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. $T=\frac{R+P^3}{15Q}$