given: 2 ≅ 5, ab ≅ de
prove: bc ≅ ec

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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.