1. A pair of supplementary angles is shown. One angle measures 10x and the other angle measures 70 degrees.

What is the value of x?

A) 10°

B) 11°

C) 20°

D) 21°

2. A right angle is shown divided in two parts. The measure of the angle of one part is 30 degrees and the measure of the other part is 5x plus 15 degrees. What is the value of x?

A) 3

B) 9

C) 12

D) 15

Question

Semaj Kelly

Mathematics

2 November, 12:15

1. A pair of supplementary angles is shown. One angle measures 10x and the other angle measures 70 degrees.

What is the value of x?

A) 10°

B) 11°

C) 20°

D) 21°

2. A right angle is shown divided in two parts. The measure of the angle of one part is 30 degrees and the measure of the other part is 5x plus 15 degrees. What is the value of x?

A) 3

B) 9

C) 12

D) 15

+5

Answers (2)

Know the Answer?

Tiara · Answer 1

1) 10x+70 = 180

10x = 180-70

10x = 110

x = 11

2) 5x+15+30 = 90

5x = 90-45

x = 45/5

x = 9

Akira Stein · Answer 2

1.

supplementary add to 180

10x+70=180

minus 70 both sides

10x=110

divid both sides by 10

x=11 degrees

B

2.

right angle is 90 degrees

30+5x+15=90

5x+45=90

minus 45 both sides

5x=45

divide 5 both sides

x=9

B

1. B

2. B