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scoundrel [369]
3 years ago
7

I need to know what 8(ii) because I don’t know the method

Mathematics
1 answer:
Irina18 [472]3 years ago
6 0
Notice y° and y° and 50°, are all three angles in a flat-line, namely "linear angles", and since a flat-line is always 180°.

\bf y+y+50=180\implies 2y=180-50\implies 2y=130
\\\\\\
y=\cfrac{130}{2}\implies  y=65
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