Find the values
using
expansion formula
1) 1.5×2.5

Three children each had the same amount of money in their savings account. one of the children withdrew three quarters of her moneyand spent it all on a $100 sports jersey. what was the total amount of money originally in the accounts?

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).

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe