Simplify. -5 (1.9x - 4.32) + 0.7 0 -9.5x – 3.62 0 -8.8x + 21.6 0-8.8x – 20.9 0 -9.5x + 22.3

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

ask the math teacher she or he would know lol.

step-by-step explanation:

the anwser is x< -17/2