Answer:
a
Step-by-step explanation:
All 3 sides of an equilateral triangle are the same.
Set up an equation with two sides equaling each other and solve for n:
2n +15/4 = 7n
Subtract 2n from both sides:
15/4 = 5n
Divide both sides by 5:
n = (15/4) / 5
n = 3/4
Now you have a value for n, replace n and solve for the length:
7n = 7(3/4) = 21/4 = 5 1/4
Each side is 5 1/4
Answer: 583 miles
Step-by-step explanation
To go from Charlotte to Chicago through the way of Cincinnati would just be the sum of both distances.
Answer:
Step-by-step explanation:
We can use the rule of three!
We know we have the following relationship:

From here, we can solve this like any other equation:

Therefore, you would earn $28 after washing 4 cars.
Good luck!