Answer:

Step-by-step explanation:
Given
See attachment for soccer field
Required
The possible dimension of the field
From the attachment, we have:



So, we have:

This gives:

Express 36 as 6^2

Express as difference of two squares

Hence, the dimension is: 
Answer:

Step-by-step explanation:
To answer this problem, we must bear in mind that the express train travels 3 times faster than the freight train.
If we call F the distance that the freight train travels and we call E at the distance that the express train travels, we must have the distance between them after 15 minutes it must be 30 miles.
So

We also know that:
Since the express train travels 3 times faster than the freight train.
So, like both equations, we have to:

Then
miles in the opposite direction.
This is the distance you traveled in 15 minutes.
Therefore, the speed of the express train (
) is the distance traveled between the time it did

Answer:
15/2
Step-by-step explanation:
My interpretation of your math expression is "2 1/2 divided by 1/3."
I prefer to write this as:
5 1
----- ÷ -----
2 3
which is equivalent to:
5 3
----- * ----- = 15/2
2 1