Answers to part a and b

Mathematics

1 answer:

Svetlanka [38]2 years ago

8 0

Step-by-step explanation:

m <a+m <b+m <c=180 {sum of angles in a straight line are 180}
3x+5+5x-18+7x-2=180
15x-15=180
15x=180-15
15x=165
x=165/15
x=11
so, m<a=3x+5=3×11+5=33+5=38

m<b=5x-18=5×11-18=55-18=37

m <c=7x-2=7×11-2=77-2=75

part B: no bcuz their sum isn't 90 whereas to be complement it must be 90

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