Question 474211
∠PQR and ∠ABC are supplementary angles and ∠PQR is nine times as large as ∠ABC. Determine the measure of each angle. 
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Let angle PQR be "x"
Let angle ABC be "y"
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Equations:
x + y = 180 degrees
x = 9y
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Substitute for "x" and solve for "y":
9y + y  180
10y = 180
y = 18 degrees
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Solve for "x":
x + y = 180
x + 18 = 180
x = 162 degrees
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Cheers,
Stan H.
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