Four pupils have an average age of 12years and two other pupils of average age of 10.5years are added. What is the average age of the six pupils?

If the first term of an AP is 1.2 and the common difference is also 2, what is the mean of the first five terms?

If y varies inversely as x2, how does x vary with y?

Two angles of a triangle are 450 each and its longest side is 12cm. Find the length of one of the other sides

Find the surface area of a sphere whose radius is 3.5cm, correct your answer to one decimal place (π = \(\frac{22}{5}\))

The nth term of a sequence is given as 4 x 3(3 - n). Calculate the third term.

The angle subtended by a diameter of a circle at the circumference is a/an

Evaluate \(1011_{two}\) + \(1101_{two}\) + \(1001_{two}\) - \(111_{two}\)

Find the area of a triangle ABC such that a = 16cm, b = 14cm, c = 12cm, leave your answer in surd form