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06-02-2017
Mathematics

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apologiabiology apologiabiology

23-05-2017

remember the sum of all the angles in a triangle add to 180
so
65+3x-10+2x=180
55+5x=180
minus 55 both sides
5x=125
divide both sides by 5
x=25 degrees

angleb=3x-10
angleb=3(25)-10
angleb=75-10
angleb=65 degrees

anglec=2x
anglec=2(25)
anglec=50

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