29levelupchaye2 29levelupchaye2

13-10-2017
Mathematics

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Find x
Geometry homework. Please help!

Find x Geometry homework Please help class=

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ejelonubenedict ejelonubenedict

13-10-2017

the triangle is an isosceles triangle
where d apex angle =180-60 =120°
base angles are equal
so 120+ 2(5x+15)=180
120+10x+30=180
10x+150=180
10x=180-150=30
x=30/10=3
x=3

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