Question

If (3x + 40°) and (x - 20) are supplementary angles, find x.​

Answer 1

Answer:

e

40°

Step-by-step explanation:

3x+40 +x-20 = 180°

4x = 180 - 20

x = 40° e

Answer 2

Answer:

1) 3x + 40° = 180°

3x =180-40

3x= 140

x=140/3

=46.6666666...…..

2) x-20=180

x=180-20

x=160