In an orchestra the ratio of trombones to violas is 1: 3. there are 9 violas. write a proportion that gives the number t of trombones in the orchestra.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Use the distributive property -7(-2x+u-2)

5cakes cost 3.50 how much do 7 cakes cost