What is the scale factor from triangle ABC to triangle DEF

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 is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1