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Talja [164]
3 years ago
15

Math question please show work. If you get this right I will mark you as a brainliest

Mathematics
2 answers:
Sever21 [200]3 years ago
7 0
The answer is 20 because if you add all of the numbers up and divide by three you get 20
cricket20 [7]3 years ago
5 0

Use Cosine Rule

12^2 = 18^2 + 28^2 - 2*18*28* cos C

cos C = (12^2 - 18^2 - 28^2) / (-2*18*28)

= 0.95635

m < C = 17 degrees

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Nadya [2.5K]

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5 0
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