The answer to your question is 3 1/2 as a fraction.
Answer:
1. 5r-8=r
2.3x-4=120
3. x-20=27
4. 3x+10=46
5. 2x+12=16
6. 8+4x=56
7. 16/x=2
8. x+6=24
9. 5x+19=67
10. 6-4x=38
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Hope this helps:)
we are given
exterior angle is 18
so,

now, we can use formula
number of sides of regular polygon = 360/(exterior angle)
so, we get


so, number sides is 20..........Answer