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19-11-2016
Mathematics

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I need help on NUMBER 8.

I need help on NUMBER 8 class=

Respuesta :

19-11-2016

Explanation: I know that these two angles are supplementary, so I know by adding them, they equal 180 degrees.

Math: x+30+(3x+10)=180
4x+40=180
4x=140
X=35

Substitute your X values back in.
X+30
35+30
=65

3x+10
3(35)+10
=115

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