At what value of x is the function y = x² - 6x - 7 minimum?

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

In a class, 120 students speak English or French or both. 70 speak English and 55 speak French. How many speak English but not French?

Paul and his friend, Peter went to buy an article costing ₦600. Peter had 10% of the cost and Paul, 40% of the remainder. How much did they have altogether?

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

If x and y represent the mean and the median respectively of the following marks of students in a Mathematics test; 11, 12, 13, 14, 15, 16, 17, 18, 19, 21. Find x/y correct to 1 decimal place.

A ladder 20m long rests against a vertical wall so that the foot of the ladder 9m from the wall. The height (correct to 1 decimal place above the ground at which the upper end of the ladder touches the wall is

The second and fifth terms of a geometric progression a 21 and 567 respectively. Find the first time and the common ratio of the progression.

One of these is a demerit of a sample

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

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?

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

A dealer increased the price of an item by 20%, and then increased the price of the same item by 30%. If x is the original price, what is the price after the two increases?

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

Mr. Robson bought bags of orange for ₦2,500 each. He sold them for ₦90,000 at a loss of 20%. How many bags of orange did he buy?

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

Find the sum to infinity of the following series 3 + 2 + 4 + 4/3 + 8/9 + 16/27 + ......

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

If x and y are two real numbers such that 3x + 2y = 5 and 5x + 4y = 9, then 4x + 3y =

Justice starts a 5km walk from P on a bearing 0230. He then walks 4km on a bearing of 1130 to Q. What is the bearing of Q from P?

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?

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

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

In an arithmetic sequence whose 4th term is 14 and whose 11th term is 70, the first term and common difference are

Two dice are thrown. What is the probability that the sum of the two numbers obtained is greater than 10?

If y = 5cos(-6x), dx/dy is

The _______ is often the preferred measure of central tendency if the data are severely skewed.

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?

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

List the integral values of which satisfy the inequality $-2<7-3x\le 10$.

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?

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

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

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

If x = 2, then (x - 1)(2x - 3) =

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?

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

If 35 is the median of the data set including 21, 7, 45, 33, 62 and x, then x =

The ______ is the value you calculate when you want the arithmetic average.

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?