Respuesta :

Answer:

The 3rd option is the answer

Step-by-step explanation:
The two angles add up to 180 degrees. So set up the equation 10x + 2 + 12x - 22 = 180. Then simplify.
10x+2+12x-22 = 180
22x+2-22 = 180
22x-20 = 180
22x = 200
x ≈ 9.1
Then plug it back in to m2.
12(9.1) -22 = m2
m2 = 87.091