4 times the measure of the complement of an angle is equal to 2/3 the measure of the original angle's supplement. What is the measure of the angle?
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OpenStudy (anonymous):
18°
48°
72°
108°
OpenStudy (anonymous):
@mathstudent55
OpenStudy (anonymous):
@Keigh2015
OpenStudy (keigh2015):
Let the angle be x.
Complement of x = 90 - x
Supplement of x = 180 - x
4(90 - x) = 180 - x
Find x from this...
OpenStudy (anonymous):
so i distribute it
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OpenStudy (keigh2015):
yeah but tell me what you get before you turn it in
OpenStudy (anonymous):
so it would B
OpenStudy (keigh2015):
No
OpenStudy (anonymous):
how would i solve for X
OpenStudy (keigh2015):
let the angle be x.
then
complement of that = 90-x
so, 4 times of complement = 4(90-x)
2/3 of original angle's supplement= 2/3 (180-x)
so,
4(90-x)= 2/3 (180-x)
cross multiply:
12(90-x) = 360 - 2x
12*90 - 12x = 360 - 2x
1080- 360= 12x-2x
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OpenStudy (keigh2015):
Now you have to figure out the last part to get your answer
OpenStudy (anonymous):
C!
OpenStudy (anonymous):
thank yyou !
OpenStudy (keigh2015):
Correct
OpenStudy (keigh2015):
Your welcome
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OpenStudy (mathstudent55):
angle is x
complement is 90 - x
supplement is 180 - x
Now we follow the directions:
4 times the measure of the complement means
4(90 - x)
that is equal to 2/3 of the supplement which means
(2/3)(180 - x)
\(4(90 - x) = \dfrac{2}{3}(180 - x) \)
OpenStudy (anonymous):
ty @mathstudent55 but i got it ! thank you for the help tho !