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Help with problem in photo!

Help with problem in photo!
asked 11.2k views
5 votes
Help with problem in photo!

Help with problem in photo!-example-1
asked
User Rraval
by
8.3k points

1 Answer

6 votes

Check the picture below.


4+10x=\cfrac{(9x+20)+10x}{2}\implies 8+20x=19x+20\implies x=12 \\\\[-0.35em] ~\dotfill\\\\ 4+10x\implies 4+10(12)\implies \stackrel{ \measuredangle DEC }{124^o}

Help with problem in photo!-example-1
answered
User Amitabha Biswas
by
8.5k points
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