SOLUTION: The measure of an obtuse angle is 5y+45. What are the restrictions on y? (Mainly, what does restrictions mean and how to find them?)

Question 896369: The measure of an obtuse angle is 5y+45. What are the restrictions on y?
(Mainly, what does restrictions mean and how to find them?)
Answer by reviewermath(1029) (Show Source): You can put this solution on YOUR website!
Q:
The measure of an obtuse angle is 5y+45. What are the restrictions on y?
A:
An angle is obtuse if its measure is more than 90 degrees but less than 180 degrees.
The restriction on y is
90 < 5y + 45 < 180
Subtract 45 to both sides
45 < 5y < 135
Divide both sides by 5
Answer: 9 < y < 27
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