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3 years ago

14

Can someone please help me out

2 answers:

victus00 [196]3 years ago

5 0

It’s D.
Since it measures 39 degrees and the other side looks about the same amount, and 39 times 2 is 78.

ira [324]3 years ago

4 0

$BD \: is \: the \: bisector \: of \: \widehat{ABC} \Rightarrow \widehat{ABD}=\widehat{CBD} \\\Rightarrow \widehat{ABC} = \widehat{ABD} + \widehat{CBD} = 2\widehat{ABD} = 2 \times 39 = 78° \\ \Rightarrow D. \: 78°$

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