What is sin 30${}^{}$?

Solve the simultaneous linear equations: 2x + 5y = 11, 7x + 4y = 2.

Find the number of sides of a regular polygon whose interior angle is twice the exterior angle.

A ladder resting on a vertical wall makes an angle whose tangent is 2.5 with the ground. If the distance between the foot of the ladder and the wall is 60 cm, what is the length of the ladder?

Find all the values of $x$ satisfying the inequality $-14\le 4-3x\le 31$

Find the point on the Euclidean plane where the curve y = 2x² - 2x + 9 has 2 as gradient.

The roof of a shelter is made from a piece of corrugated iron 2.3m long inclined at 18º to the horizontal. How far from the wall does the roof stick out?

The most frequently occurring number in a set of values is called the ______.

A is the point (1, 5), B is the point (4, 7) and C is the point (5, 2). Triangle ABC is

P is the point (2, 7) and Q is the point (6, 3). What is the gradient of PQ?

Ann goes swimming regularly. She wants to improve her fitness, so she decides to swim 10 lengths in the first session and increase the number of lengths she swims by 2 every session. When she reaches 50 lengths in a session she will not increase the number any further. After how many sessions does Ann swim 50 lengths for the first time?

A straight line has the equation 10y = 3x + 15. Which of the following is true?

What is the sum of the first 40 even positive integers?

What is the slope of the line that is perpendicular to y - 2x = 1?

In an arithmetic sequence with 25 terms, if the first term is 60 and last term is -12, the sum of the terms of the sequence is

Which of the following is the formula for range?

A _______ variation is one whose values convey the concept of attribute rather than number.

Find the distance between points A(-4, 5) and B(-3, 2).

One of these is a demerit of a sample

One of these is not a desirable feature of a good statistical table

A straight line has a gradient of -2 and passes through the point (4, 1). What is its equation?

What is the length of an arc of a circle with a radius of 5 if it subtends an angle of 60° at the center?

The heights in cm, of 10 children are 145, 163, 159, 162, 167, 149, 150, 160, 170, and 155. The mean height of the children is

Which of these is a measure of location?

As a general rule, the _______ is the best measure of central tendency because it is more precise.

P is the point (3, 5). Q is the point (-1, 9). R is the midpoint of PQ. Which one of the following lines does R lie on?

Find the principal which amounts to ₦4,400 at simple interest in 5 years at 2% per annum

If un = 2, 6, 10, ..., the sum of the terms of the sequence above is

Ann goes swimming regularly. She wants to improve her fitness, so she decides to swim 10 lengths in the first session and increase the number of lengths she swims by 2 every session. When she reaches 50 lengths in a session she will not increase the number any further. If Ann asks her friend Joy to come swimming with her, Joy starts coming at Sue’s 8th session. Joy starts to swim 15 lengths and increases the number of the lengths by 5 each time. After how many of Joy’s sessions does she swim the same number of lengths as Ann?

Rationalize $\frac{(4\sqrt{7}+\sqrt{2})\; /}{(\sqrt{2}-7)}$

Statistics is a set of tools whose proper use will _______ the decision maker.

Find the variance of the numbers k, k + 1, k + 2.

Which of the following points does not lie on the line 2y + 5x -4 = 0?

The graph of cumulative frequency distribution is called

If un = 2, 6, 10, ..., the 12th term of the sequence is

A chord 6.6m long is 5.6m from the centre of a circle. The radius of the circle is

If un = 2, 6, 10, ..., the last tem of the sequence is 90. The number of terms in the sequence is

A housewife bought five yams at Y34 per yam and three oranges at Y5 each where Y is the currency reckoned in base six. The total amount spent by the housewife is

Three consecutive positive integers a, b and c are such that b² = 4(a + c). Find the value of c.

A rectangular box with a square base and no top has a volume of 500 cm, the dimensions of the box that require the least amount of material are