2 years ago

I need help finding the answer, to this problem.

1 answer:

7 0

M<C=180°-(m<A+m<B)=180°-((4x+5)°+(5x-1)°)=180°-(9x+4)°=(180-9x-4)°=(9(20-x)-4)°=(M9-4)° -> m<C + 4° is multiple of 9 -> m<C=122° because 122°+4°=126°=9*14<span>° = multiple of 9.</span>

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