Question

10.



Draw 2 supplementary angles. One angle is x-15 degrees and one is 2x degrees. What is the value of x in degrees?

A. 

65 degrees

B. 

130 degrees

C. 

100 degrees

D. 

75 degrees

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Answer 1

x-15+2x=180

3x-15=180

3x=180+15

3x=195

X= 65

Answer 2

ATQ, one of the supplementary angle is (x - 15)° and the other one is (2x)°

we know that supplementary angles are those angles whose sum is 180°

therefore (x - 15)° + (2x)° = 180°

➡ x - 15 + 2x = 180°

➡ 3x - 15 = 180°

➡ 3x = 180 + 15

➡ 3x = 195

➡ x = 195/3

➡ x = 65°

hence, the value of x is 65°

CORRECT OPTION IS A. 65 degrees