Unit test Find the solution to the system of equations.
You can use the interactive graph below to find the solution.
–2x+2y = - 4
3x + 3y = - 18
11-2x + 2y = -43x + 3y = -18
X=X=
y = y =

i think the correct option is the second option.

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.