Solve for x. a. 20 b. 6 c. 2~5 d. 9

Answer B

Step-by-step explanation:

Label the height = to y

All three triangles are similar.

Therefore 4/height as height /5 or

4/y =y/5                               Cross multiply

y^2 = 20                              Take the square root of both sides.

Now find x.

Solution

sqrt(x^2) = sqrt(36)

x = 6                                                 Answer

B <<<< Answer

22 and 22

step-by-step explanation:

10 plus 12 equals 22.

12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.