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Sergeeva-Olga [200]
3 years ago
10

Find x Geometry homework. Please help!

Mathematics
1 answer:
Stels [109]3 years ago
3 0
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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