janettemironov janettemironov

09-09-2020
Mathematics

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angle a and b are supplementary, The measure of Angle B is 10 degrees less than 4 times of the measure of A. What is the measure of Angle A?

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Hemijoljubac Hemijoljubac

09-09-2020

Answer:

a=23°45'

Step-by-step explanation:

a+b=180°

b=a•4-10°

a+a•4-10°=180°

2a•4-10°=180°

2a•4= 190°

2a=190°/4

2a= 47°30'

a=47°30'/2

a= 23°45'

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