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Verified Answer :

nobillionaireNobley

Supplementary angles sum up to 180 degrees.

2x - 4 + 2x + 4 = 180
4x = 180
x = 45

Therefore,
m<9 = 2(45) - 4 = 90 - 4 = 86 degrees
m<10 = 2x + 4 = 90 + 4 = 94 degrees.

ruler2006

(reposted for points)

Supplementary angles sum up to 180 degrees.


2x - 4 + 2x + 4 = 180

4x = 180

x = 45


Therefore,

m<9 = 2(45) - 4 = 90 - 4 = 86 degrees

m<10 = 2x + 4 = 90 + 4 = 94 degrees.

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