Solve the system of linear equations.
x+y+ z = 1
3x-y-7z = -33
-x-y- 5z = - 17

Multiply. write your answer in simplest form. 3/8 x 5/7

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

The tile along the edge of a triangular community pool needs to be replaced? ?