Taylor2230
Taylor2230 Taylor2230
  • 08-12-2016
  • Mathematics
contestada

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
I hope this helps you



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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