SOLUTION: an angle is two and one half times the measure of its complement. Find the measure of the angle. which is a = 2.5*(90-a)? So how do I round to the nearest tenth?

Question 341169: an angle is two and one half times the measure of its complement. Find the measure of the angle. which is a = 2.5*(90-a)? So how do I round to the nearest tenth?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
an angle is two and one half times the measure of its complement. Find the measure of the angle. which is a = 2.5*(90-a)? So how do I round to the nearest tenth?
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Let the angle be "a".
Its complement is "90-a"
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Equation:
a = 2.5(90-a)
10a = 25(90-a)
10a = 2250 - 25a
35a = 2250
a = 2250/35
a = 64.3 degrees when rounded to the nearest tenth.
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Cheers,
Stan H.
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