The shapes below are mathematically similar. 15 cm
9 cm
10 cm
x
Calculate the length of side x.

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

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Measure a and b and find their sum. how are the angles related?