Mathematics
20 Online
OpenStudy (anonymous):
Point C is the center of the circle. The measure of angle ACB is 15x + 20. Arc ADB measures 20x – 10. Find the value of x.
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OpenStudy (anonymous):
17
10
7
10.57
OpenStudy (anonymous):
i got six but that isn't an option
OpenStudy (here_to_help15):
put them equal to each other and then solve
OpenStudy (anonymous):
that's what I tried doing.
OpenStudy (here_to_help15):
answer is x = 6
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OpenStudy (driftracer305):
that's what she did........ obviously
OpenStudy (anonymous):
no it's not
OpenStudy (here_to_help15):
then you would add both the expressions together and make them equal 360 then solve for x
OpenStudy (anonymous):
Six isn't an option.
OpenStudy (here_to_help15):
ik i just saw i made a mistake
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OpenStudy (here_to_help15):
A C D is like a straight line right ?
OpenStudy (here_to_help15):
so add the given two angles and solve them by making the sum equal to 180
OpenStudy (here_to_help15):
that way, x = 17/3
OpenStudy (anonymous):
this class stresses me out so much :-)
OpenStudy (here_to_help15):
u know what nvm forget i was here : P im obviously not helping :( srry
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OpenStudy (anonymous):
no it's okay I understand you were trying to help
OpenStudy (anonymous):
why??? it's not that
we have equation 15x+20+20x-10 =360 which gives us x =10
OpenStudy (anonymous):
add common terms together?
OpenStudy (anonymous):
|dw:1406053563977:dw|
OpenStudy (anonymous):
OH YOU JUST ADDED THEM.
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OpenStudy (anonymous):
I set them equal to each other.
OpenStudy (anonymous):
the small one is 15x+20, the big one is 20x-10
OpenStudy (anonymous):
ohoh!! how can they equal??
OpenStudy (anonymous):
we can see they are not equal, right?