Question

Pls help!! I’ll give u brainliest js help me!

Answer 1

Answer:
(#12) x = 2 ; supplementary
(#13) x = 7 ; complementary

Explanation:
For these problems, we must know what a supplementary angle and a complementary angle are. A supplementary angle is an angle that when added to another has a total measure of 180 degrees (#12). A complementary angle is an angle that when added to another had a total measure of 90 degrees (#13). With this in mind, we can right equations for each problem and find the value of x.

(#12 - supplementary)
149 + 13x + 5 = 180
154 + 13x = 180
13x = 26
x = 2

(#13 - complementary )
8x + 5 + 3x + 8 = 90
11x + 13 = 90
11x = 77
x = 7

Hope this helps.

Cheers.

Answer 2

The answer for question 12, is x=2 because both sides have to equal 180 degrees, considering the line is supplementary.

The answer for question 13 is, is x=7 because both sides equal to 90 degrees, considering that the line is complementary.