Combine any like terms in the expression. If there are no like terms, rewrite the expression.

39r3+11r3+45s3-5s3-40s3

At a certain time of the day, a tree 15m tall casts a shadow of 12m, while a second tree casts a shadow of 20m. how tall is that?

Wal-mart sells a case of 24 cans of Diet Coke for $6.88. Kroger sells a 12 pack of Diet Coke for $3.99. Which is the best buy?

Penny reads 10 pages in one fourth 1/4 hour. What is the unit rate for pages per hour? For hours per page?

Write a four digit number that is divisible by 5 & 9

A rectangle is drawn so the width is 7 inches longer than the height. if the rectangle's diagonal measurement is 17 inches, find the height.

Madonna and Bruce Springsteen had the two top-grossing concert tours for 2012, together generating about $427 million in ticket sales. If Bruce took in $29 million less than Madonna, how much did each tour generate?

How to turn 12 14/15 into a decimal?

In which set are the numbers equal? A) 1 5, 0.20 and 20% B) 1 2, 0.20 and 50% C) 4 5, 0.60 and 60% D) 1 4, 0.20 and 20%

Ramona earns $32,385.60 annually. What is her average biweekly gross pay

Which statement is true? The altitude drawn to the leg of a right triangle forms two triangles that are similar to each other and to the given triangle.