58:11 HERE
What is the solution of the equation (x – 52 + 3(x – 5) + 9 = 0? Use u substitution and the quadratic formula to solve
-3+315
OX=
2
-
7+31V3
0 X=
2
O x = 2
O x=8

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Which statement justifies why angle ebc measures 90?

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?