Steve7173638 Steve7173638
  • 10-06-2020
  • Mathematics
contestada

What is the vale of of???

What is the vale of of class=

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snog
snog snog
  • 10-06-2020

Answer:

B

Step-by-step explanation:

Because ∠EDF and ∠BDC are vertical angles, ∠D = 9x. Since ∠ABD and ∠BDC are supplementary, our answer is 2x + 105° + 9x = 180° or B.

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jimrgrant1 jimrgrant1
  • 10-06-2020

Answer:

B

Step-by-step explanation:

∠ BDC = 9x ( vertical angles )

∠ ABD and ∠ BDC are supplementary , thus

∠ ABD + ∠ BDC = 180 , substitute values

2x + 105 + 9x = 180 → B

Answer Link

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