Evaluate x=-3, y=4, z=-5
Answers suggested below
-17
41
23
-40
-58
-16

2. -16

6. 23

7. -40

8. -17

9. 41

10. -58

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.

answer: it is a.,b.,d.

step-by-step explanation: