Answer:
51 degrees
Explanation:
m<A = 11x+13
m<B=9x-24
Right angle = 90 degrees
11x+13=90
11x=77
x=7
To find m<B:
plug in x:
9(7)-24
m<B=39 degrees
Difference in the two angles: m<A - m<B
= 90-39
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