The first one is B because of the first attachment. The second one is A because of the second attachment. The third one is C because of the expression used to solve for sum of angles:
(n-2)180
(8-2)180
1080
Hope this helps!

7 0

3 years ago

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WILL GIVE BRAINLIEST AND 30 POINTS! Simplify −3 +i over 7 + i . First, multiply both the numerator and denominator by A. -3 + i

spayn [35]

You have (-3 +i)/(7 + i) so you need to remove the i from the numerator, so you have to multiply by 7-i and you get

(-22 + 4i)/50 which can be simplified to

(-11 + 2i)/25

3 0

3 years ago

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Write the percent as a fraction and as a decimal. 139​% What is the fraction​ equivalent?

Write the percent as a fraction and as a decimal. 139% What is the fraction equivalent?