Which of the following equations have exactly one solution? Choose all answers that apply:
Α.
2x - 31 = 2x - 31

B
2x – 31 = -2x - 31

C
2x + 31 = 2x - 31

D
2x - 2 = 2x - 31

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.

3100

step-by-step explanation:

the answer to your question is minor arc.

did you get the answer?