If y varies jointly as x and z and y=60 when x= 10 and z=-3, find y when x=8 and z=15.

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

For what value of x does 4x = (1/8) x + 5?

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