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I need help with this

I need help with this-example-1
User Zaaferani
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1 Answer

2 votes

Answer:

90°

Explanation:

5x+20=9x

20=4x

5=x

<DEG=5x+20+9x=5(5)+20+9(5)=25+20+45=90

User Nianyi Wang
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