Mathematics — 2019

Given that A = {2,4,6,8,10} and B = {4,8,12}, find A ∪ B .

Express 0.000344 in standard form.

Which of the following numbers is the largest ?

Correct 0.024561 to three significant figures.

Simplify: (7 5 x7 3 )÷7 6

How many lines of symmetry has a square?

-9

Factorize: kx +2 xt -4 k -8 t .

There are 12 boys and 18 girls in a class

Express 30% as a fraction in its lowest term.

Make k the subject of the relation, ky - k = y 2

The mean of the numbers 5, 2 x ,4 and 3 is 5. Find the value of x .

Find the rule of the mapping

The two sides of a parallelogram are 4.8 m and 7.2 m long. Find its perimeter.

A tank in the form of a cuboid has length 6 m and breadth 4 m. If the volume of the tank is 36 m 3 , find the height.

If the bearing of A from B is 240 o , find the bearing of B from A

Find the truth set of the inequality 2 y + 5 < 4 y - 5.

Find the gradient of the straight line which passes through the points (-3,4) and (3,-2).

If 6:8 = r :48, find the value of r

A man travelled a distance of 8 km in an hour. How long will it take him to cover a distance of 12 km, travelling at the same speed?

A number is selected at random from: 25,26,27,28,...,35. Find the probability that the number selected is a prime number.

Express 12/25 in decimal fraction.

Find the diameter of a circle whose circumference is 88 cm. [Take π = 22⁄7]

When twelve is subtracted from three times a certain number and the result is divided by four, the answer is eighteen. Find the number.

Given that r =

A trader sold 90 oranges at 3 for GH₵ 0.75. How much did she get from selling all the oranges?

Express 72 as a product of prime factors.

Simplify: 3 a x 24 ab .

Simplify:

Multiply 247 by 32.

Evaluate: (0.07 x 0.02) ÷ 14.

In a class of 23 students, the girls were 7 more than the boys. How many boys were in the class?

Express 30 minutes as a percentage of 3 hours 20 minutes

Find the Least Common Multiple (L.C.M) of 2, 3 and 5.

The simple interest on GH₵ 450.00 for 4 years is GH₵ 45.00, find the rate of interest

Find the median of the following numbers: 46, 68, 34, 37, 76 and 81.