-2(y - 4) = 20 - 2y - 12

No solution

Step-by-step explanation:

-2(y - 4) = 20 - 2y - 12

-2y+8=20-2y-12

-2y+2y=8-8

0=0

No solution

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

the answer is z7+8/5