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

The sum of the first 20 terms of the progression 3, 6, 12, ... is

One of these is a demerit of a sample

The lengths of the sides of a right-angled triangle are ym, (3y - 1)m and (3y + 1)m, find y.

Find the equation of the line through (5,7) parallel to the line 7x + 5y - 5 = 0.

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 graph of cumulative frequency distribution is called

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

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

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.

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?

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?

The chances of three independent events P, Q, R occurring are $\frac{\mathrm{1/}}{2}$, $\frac{\mathrm{2/}}{3}$,$\frac{\mathrm{1/}}{4}$ respectively. What are the chances of P and Q only occurring?

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

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

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

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?

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

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

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

Tunse bought a house for ₦1,250,000.00 and spent ₦350,000.00 to renovate it. He then sold the house for ₦2,000,000.00. What is the percentage gain?

No of children: 0, 1, 2, 3, 4, 5, 6
No of families: 7, 11, 6, 7, 7, 5, 3
Find the mode and median respectively of the distribution above.

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

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

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

Which of the following is the formula for range?

_________ are used when you want to visually examine the relationship between two quantitative variables.

A company employs 100 people, 65 of whom are men. 60 people including all the women are paid weekly. The number of the men that are paid weekly is

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

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

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

Find the value of p, if the line which passes through (-1, p) and (-2p, 2) is parallel to the line 2y + 8x - 17 = 0.

AAUA allocations to various faculties in a school budget are as follows:

Science: ₦35,000,000.00
Education: ₦25,000,000.00
Law: ₦20,000,000.00
Social and Management: ₦20,000,000.00.
In a pie chart to represent this information, the corresponding angle to science is

Given the list of numbers {1, 6, 3, 9, 16, 11, 2, 9, 5, 7, 12, 13, 8}, what is the median?

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?

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

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

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 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?

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.