Find the slope of the graph y=5sinx at x=pi/2

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3