Ryan and kathy each drew a triangle with an angle of 20 degrees. under which condition would the triangles be similar

a) if both are right triangles.
b) if both are obtuse triangles
c) if the triangles have the same area.
d if the triangles have the same perimeter.

What are “like terms”? why can we only add like terms?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2