Mathematics

In the diagram above, O is the centre of the circle ABC, < ABO = 26° and < BOC = 130°. Calculate < AOC.

A. 26° B. 13° C. 80° D. 102° Correct Answer: Option D D. 102°

5 years ago

Each of the interior angles of a regular polygon is 140°. Calculate the sum of all the interior angles of the polygon.

A. 1080° B. 1260° C. 2160° D. 1800° Correct Answer: Option B B. 1260°

5 years ago

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° Correct Answer: Option D D. 156°

5 years ago

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…

5 years ago

The weight of a day-old chick was measured to be 0.21g. If the actual weight of the chick is 0.18g, what was the percentage error in the measurement?

A. 15.5% B. 18.2% C. 14.8% D. 16.7% Correct Answer: Option D D. 16.7%

5 years ago

The angles of a polygon are given by 2x, 5x, x and 4x respectively. The value of x is?

A. 31° B. 30° C. 26° D. 48° Correct Answer: Option B B. 30°

5 years ago

If S = (4t + 3)(t – 2), find ds/dt when t = 5 secs.

A. 50 units per sec B. 35 units per sec C. 22 units per sec D. 13 units per sec…

5 years ago

The simple interest on ₦8550 for 3 years at x% per annum is ₦4890. Calculate the value of x to the nearest whole number.

A. 19% B. 20% C. 25% D. 16.3% Correct Answer: Option A A. 19%

5 years ago

Tade bought 200 mangoes at 4 for ₦2.50. 30 out of the mangoes got spoilt and the remaining were sold at 2 for ₦2.40. Find the percentage profit or loss.

A. 43.6% loss B. 35% profit C. 63.2% profit D. 28% loss Correct Answer: Option C C. 63.2% profit

5 years ago

If P varies inversely as the square root of q, where p = 3 and q = 16, find the value of q when p = 4.

A. 12 B. 8 C. 9 D. 16 Correct Answer: Option C C. 9

5 years ago
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