briannaparker11 briannaparker11

14-04-2018
Mathematics

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What is the measure of arc AC? How did you get this answer?

What is the measure of arc AC How did you get this answer class=

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popalabdulqayou popalabdulqayou

18-04-2018

the double of an inscribed angle is equal to the central angle and central angle is equal to arc angle, therefore:
2(3x-1.5)=(3x+9)
6x-3=3x+9
6x=3x+12
3x=12
x=4
then plug it back to the first equation 3x+9, so, therefore 3(4)+9=21

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