Respuesta :

Answer :x = 17

Step-by-step explanation:

The two angles you are given equal 180 degrees.

3x + 5 + 8x - 12 = 180

11x - 7 = 180

11x = 187

x = 17

clarch19

Answer:

x = 17

Step-by-step explanation:

angles Q and M are right angles (they each measure 90 degrees)

there are 360 degrees inside any 4-sided polygon

add the following to solve for x:  

90 + 90 + 3x + 5 + 8x - 12 = 360

11x + 185 - 12 = 360

11x + 173 = 360

11x = 187

x = 187/11

x = 17

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