Mathematics quiz 1

Mr Aborowa bought a car for N200,000.00 and later sold it for N170,000.00. What is the percentage loss?

• 11.60%

• 7.60%

• 15%

• 17.65%

Given that (3 - y) ÷ 2x = (6y + 7) ÷ (4x - 5), find the value of x when y = 2

• 64/5

• 6

• 5/34

• -5/34

If n{A} = 6, n{B} = 5 and n{A ∩ B} = 2, find n{A ∪ B}

• • 7

• 8

• 9

• 13

Simplify 27^-⅓× 64^− ⅓ × 4^⅓

• 1/12

• 3/4

• 1/3

• 3/64

Find the value of x in the equation: 9x = 729

• 81

• 27

• 18

• 9

Express 0.03785 in standard form correct to 3 significant figures.

• 3 × 10–²

• 3.78 × 10–²

• 3.79 × 10–2

• 3.79 × 10–¹

The bearing of a point Y from point x is 150°. What is the bearing of X from Y?

• 330°

• 240°

• 150°

• 120°

Convert (101.011)two to base 10

• 63

• 43

• 77/8

• 43/8

Solve the equation x² - 3x - 10 = 0

• • -2 or -5

• • -3 or -10

• • 5 or -2

• • 2 or 5

The lengths of the sides of a triangle are 15m, 21m, and 28cm. What is the size of the angle facing the side 21m (correct to one decimal place)?

• • 85.7°

• • 47.5°

• • 41.5°

• • 41.4°