Which statement is true?

A. 5x and 5 are like terms.

B. 5 and x are like terms.

C. 5x and x are like terms.

D. 5x and 5y are like terms.

C. 5x and x are like terms.

Step-by-step explanation:

Like terms have the same degree of the variable

5x and x are like terms because both have x to the power 1

you'll just earn points here

step-by-step explanation:

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.