Step-by-step explanation:
11.3x-12 for x=5
=3(5)-12
=15-12
=3
12.45+15(n-1) for n=6
=45+15(6-1)
=45+15(5)
=45+75
=120
Step-by-step explanation:
The formula to find the circumference is
C=d×(3.14)
Therefore you must work backwards to find the radius.
If the circumference is x then divide both sides of the equation by pie to get the diameter. Then once you have the diameter you divide that number by two to get the radius.
1*3+7*3=3(1+7)=3*8
Hope this helps
I need a graph or something
