Which set of numbers could represent the lengths of the sides of a right triangle? A: 8, 15, 17

B: 7, 9, 11

C: 12, 18, 22

D: 10, 15, 20

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

X2 + y 2 = 36 x + y = 6 solve the system of equations.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).