Multiply 2.7 x 10-4 by 6.3 x 106 and leave your answers in standard form

If \(\sqrt{50} - K\sqrt{8} = \frac{2}{\sqrt{2}}\), find K

In what number base is the addition 465 + 24 + 225 = 1050?

If 9(2 - x) = 3, find x

Simplify \(\frac{1\frac{7}{8} \times 2\frac{2}{5}}{6\frac{3}{4} \div \frac{3}{4}}\)

A sales boy gave a change of N68 instead of N72. Calculate his percentage error

If Un = n(n2 + 1), evaluate U5 - U4

Simplify: \(\frac{x^2 - y^2}{(x + y)^2} + \frac{(x - y)^2}{(3x + 3y)}\)

Four oranges sell for Nx and three mangoes sell for Ny. Olu bought 24 oranges and 12 mangoes. How much did he pay in terms of x and y?