Four years ago, jane was twice as old as sam. four years on from now, sam will be 3/4 of jane's age. how old is jane now?

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

Reflect the point (7,0) across the y-axis

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).