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Semmy [17]
2 years ago
10

Need help with question please.

Mathematics
2 answers:
Nimfa-mama [501]2 years ago
8 0

m<A + m<B +m<C = 180
6x - 1 + 20 + x + 14 = 180
7x + 33 = 180
7x = 180 -33
7x = 147
x= 147/7
x= 21

m<A = 6x - 1 = 6(21) - 1 = 125
m<C = x + 14 = 21 + 14 = 35

Alex777 [14]2 years ago
4 0
(6x-1)(x+14)=160 because b is 20 and total they equal 180 so you -14 from both sides then you have 6x-1+x=146 then you add 1 to both sides and you have 7x=147 then you divide 7 from both sides and get 21=x and then you (6(21)-1) =125 =A
((21)+14) =35 =C
hope that helps

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