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Angle x is (2n + 12)°, and angle y is (3n + 18)° . Find the measure of angle x. Note: not drawn to scale. A) 24° B) 30° C) 72° D) 108
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Jul 20, 2017
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Angle x is (2n + 12)°, and angle y is (3n + 18)° . Find the measure of angle x.
Note: not drawn to scale.
A) 24°
B) 30°
C) 72°
D) 108
Mathematics
high-school
Manoj Kasyap
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Manoj Kasyap
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angles add to 180 since assume straighe line
x+y=180
x=2n+12
y=3n+18
2n+12+3n+18=180
5n+30=180
minus 30
5n=150
divide 5
n=30
sub back
x=2n+12
x=2(30)+12
x=60+12
x=72 degrees
C
CloudyTrees
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Jul 25, 2017
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CloudyTrees
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