what is the measurement of 6?
A) 45°
B) 54°
C) 117°
D) 126°

Answer:
13x+9+5x+9=180
18x+18=180
18x=180-18
18x=162
x=9
so 5(9)+9 = 54
according to inverse angles 6=5x+9 and 5x+9 is equal to 54
so 6= 54 degrees
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