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frozen [14]
3 years ago
14

Can someone please help me on this one?

Mathematics
1 answer:
diamong [38]3 years ago
4 0
Add the three angles and set them to 180
4x-13+15+x+18=180
5x+20=180
5x=160
x=32

Then plug in to get A and C
A=4*32-13 
A=115

C=32+18
C=50
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6 0
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Read 2 more answers
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