Some one help ts also says explain ur thinking

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

What is the length of the unknown leg in the right triangle ?

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.