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Anna71 [15]
3 years ago
11

I need help with this question I dont know what to do

Mathematics
1 answer:
ziro4ka [17]3 years ago
7 0
M<A + m<B = 180
5y + 9y + 68 = 180
14y + 68 = 180
14y = 180 -68
14y = 112
y = 112/14
y = 8

so 
m<B = 9y + 68
m<B = 9(8) + 68
m<B = 72 + 68
m<B = 140
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