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In the diagram, mBDA = 150°. Find mBDC.
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In the diagram, mBDA = 150°. Find mBDC.

In the diagram, mBDA = 150°. Find mBDC.-example-1
User Mike Finch
by
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1 Answer

5 votes

Answer:

a. 70°

Explanation:

m∠BDC + m∠CDA = m∠BDA

-3x + 34 - 2x + 56 = 150

-5x + 90 = 150

-5x = 60

x = -12

m∠BDC = -3x + 34 = -3(-12) + 34

= 36 + 34 = 70°

User MichaelT
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