Question

Angles X and Y are supplementary. Angle X is 3 times the measure of angle Y. What is the measure of angle X?

45°
60°
120°
135°

Answer 1

The answer is D. on edgen.

Explanation:

D. 135

Answer 2

so from this given deatils result that angle x and y are supplementary what mean that angle x and angle y assumed has a measure of 180 degrees

given that angle x is 3 time the measure of angle y

so this mean that x=3y => 3y +y = 180 => 4y=180 => y=180/4 = 45
so angle y has a measure of 45 degrees

x = 3y so angle x = 3*45 = 135 degrees

the last choice is right sure