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Crazy boy [7]
3 years ago
11

I need help asappp pleaseee

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
4 0
If a straight line is 180 degrees you would then set up you equation as (10x+2)+(9x+18)=180
Solving that would give you
X= 8 8/19
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Answer:

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Slope \:  of \:  AB =  \frac{1 - 1}{7 - 2}  =  \frac{0}{5}  = 0 \\  \\ Slope \:  of \:  BC =  \frac{4 - 1}{2 -  7}  =  \frac{3}{ - 5}  =  - \frac{3}{ 5}   \\  \\  \because \: Slope \:  of \:  AB \neq \: Slope \:  of \:  BC \\  \\  \therefore \: given \: points \: are \: non - collinear. \\

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See explanation

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