Share 15 centimetre in the ratio 1:2

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Complete the steps to find 4.830 ÷ 5