There are 20 hardcover and paperback books in a box. There are 10 more hard cover books then paperback books. Right and solve a system of linear equations to find the number of paperback books and the number of hard cover books

If B=xy+t express y in terms of B x and t

Y=a (x-r) (x-s) what is a and r and s?

Dorene purchased a chocolate bar in a shape of a triangular prism at the local candy store. If the chocolate bar has a base area of 12 square units and a height of 8 units, how many cubic units of chocolates did dorene bu

Martina needs to memorize words on a vocabulary list for french class. she has memorized 12 of the words, which is three-fourths of the list. how many words are on the lis

Colin got 16 out of 80 correct in his test. What fraction of the marks did he get correct? Give your answer in its simplest form.

A child takes a nap averaging three hours and gets an average of 12 hours of sleep at night. Nap time and night time sleep can each vary by 30 mins. What are the possible time lengths for the child's nap and night time sleep? ... ?

4x - 10 ≥ 22 or x - 5 < - 6

What does control for eximerment mean .

A scientist estimated that a mixture would need 5 millimeters of a chemical to balance. The actual amount d was 7 millimeters. What was the percent error of the scientists estimation?

Start at 7 and subtract 3each time