Which pair of angles must be supplementary so that r is parallel to s?

Step-by-step explanation:

There are lots of angles that you could use.

1 and 4

2 and 3

13 and 14

12 and 5

There are others.

5 and 6 will work. 5 is acute. 6 is obtuse. If r and s are meant to be parallel then those angles are the only ones that speak of r and s. The others will make p and q parallel.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x