sarahishere68338 sarahishere68338

21-08-2018
Mathematics

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

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

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KeiraDawn KeiraDawn

21-08-2018

The answer is 20 because if you add all of the numbers up and divide by three you get 20

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Аноним Аноним

21-08-2018

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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