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

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

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

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

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

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

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

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

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?

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

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

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

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

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

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?

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.

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?

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

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 line y = 5x – 3 and y = 2x + 9 intersects at P. What are the coordinates of P?

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?

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

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

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?

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

If y = 5cos(-6x), dx/dy 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. Ann decides she will give herself a reward
when she has swum a total of 400 lengths. After how many sessions does she get her reward?

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

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

Divide the L.C.M. of 36, 54 and 90 by their HCF.

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

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

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

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

Which of the following is the formula for range?

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?

A class of all possible subsets of space S is called

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

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