Angles $a$ and $b$ are supplementary. if the measure of angle $a$ is $8$ times angle $b$, what is the measure of angle a?

A= 160

Step-by-step explanation:

anlge A is 8 times angle B so angle A is 8B

The sum of supplementary angles is 180

B+ 8B = 180

9B = 180

B= 20

AngleB=20

Angle A  = 8*20 =160

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step-by-step explanation:

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x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x