Solve each system by substitution. 6) -8х - бу = 14 y = 4x - 13

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .