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Anna71 [15]
3 years ago
11

I need help with this question I dont know what to do

Mathematics
1 answer:
ziro4ka [17]3 years ago
7 0
M<A + m<B = 180
5y + 9y + 68 = 180
14y + 68 = 180
14y = 180 -68
14y = 112
y = 112/14
y = 8

so 
m<B = 9y + 68
m<B = 9(8) + 68
m<B = 72 + 68
m<B = 140
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Step-by-step explanation:

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2) Combine like terms!

12x^3 -18x^2 - 36x -10x^2 +15x+30 = 12x^3 -28x^2 -21x +30

Answer is:

12x^3 -28x^2 -21x +30

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5 0
4 years ago
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ANTONII [103]

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