Does the coordinates (54,36), (36,54), (53,64), and (63,45) make a parallelogram?
Why?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122