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

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

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

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?

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?

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

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

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

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

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

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

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

The length of a rectangle is three times its width. If the perimeter is 72 cm, the width of the rectangle is

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

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

In a survey of villagers, it is found that 20% of the people have visited Kano and 25% have visited Port Harcourt. If 5% have been to both cities, then the percentage that have visited neither Kano nor Port Harcourt is

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

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

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.

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.

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 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

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?

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

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

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

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

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?

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

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

A is the point (1, 5), B is the point (4, 7) and C is the point (5, 2). Triangle ABC 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. After how many sessions does Ann swim 50 lengths for the first time?

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

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

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

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

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

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.

A class of all possible subsets of space S is called

Which of these is a measure of location?