SOLUTION: HW Question: Two angles are supplementary. If angle A is 5 times the sum of angle B plus 7.2, what is angle B? Teacher's answer key says: 5x + 7.2 + x = 180 x = 28.8 Sh

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Question 1116688: HW Question:
Two angles are supplementary. If angle A is 5 times the sum of angle B plus 7.2, what is angle B?
Teacher's answer key says: 5x + 7.2 + x = 180 x = 28.8
Shouldn't it be solved like this: 5(x + 7.2) +x = 180 ? x = 24


Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630)   (Show Source): You can put this solution on YOUR website!
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Two angles are supplementary. If angle A is 5 times the sum of angle B plus 7.2, what is angle B?
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Answer by MathTherapy(10557)   (Show Source): You can put this solution on YOUR website!
HW Question:
Two angles are supplementary. If angle A is 5 times the sum of angle B plus 7.2, what is angle B?
Teacher's answer key says: 5x + 7.2 + x = 180 x = 28.8
Shouldn't it be solved like this: 5(x + 7.2) +x = 180 ? x = 24
IGNORE the NONSENSE by the other person!

Let angle B be B

Then angle A = 180 - B, since the angles are SUPPLEMENTARY

We then get: 180 - B = 5B + 7.2

- B - 5B = 7.2 - 180

- 6B = - 172.8

B, or measure of angle B = 

AGAIN, any other answer is NONSENSE, especially the one from that person who you can be CERTAIN will ALWAYS be about 95% INCORRECT!! 

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