5(n + 3) + 4n
5n + 15 + 4n Distributive property
5n + 4n = 9n Combine like terms
9n + 15 Final answer
Answer: 9n + 15
Answer:
Circumference ≅ 195 mm
Step-by-step explanation:
The circumference of a circle is equal to: 
Since
we can replace that in the circumference equation giving us:

We know Diameter = 622 mm and pi = 3.14 so:

{ solution is attached below}
Answer:
28
Step-by-step explanation:
Answer:
There are no solutions
Step-by-step explanation:
Because the lines are parallel, they will never meet, meaning there are no solutions to this system of equations