Question

Answers to part a and b​

Answer 1

Step-by-step explanation:

1. m <a+m <b+m <c=180 {sum of angles in a straight line are 180}
2. 3x+5+5x-18+7x-2=180
3. 15x-15=180
4. 15x=180-15
5. 15x=165
6. x=165/15
7. x=11
8. 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