Which of the following could represent the angle measurements of a right triangle A: 90°, 30°, 40° B: 15°, 85°, 90° C: 20°, 70°, 90° D: 40°, 40°, 100°

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost