Taylor2230 Taylor2230

08-12-2016
Mathematics

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How do I do this? Please help. Thank you, for your smartness and knowledge.

How do I do this Please help Thank you for your smartness and knowledge class=

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Аноним Аноним

08-12-2016

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B+A=m (DCB)

two interior angles sum is exterior angle

3y+22+4y=106

7y=106-22

7y=84

y=12

m (A)=4y=4.12=48

m (B)=3y+22=3.12+22=58

m (BCA)+106=180

m (BCA)=74

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