Answer: 
Step-by-step explanation:
By definition, the perimeter of a rectangle is:

Where "l" is the lenght and "w" is the width.
If you solve for "l":

In this case, you know that the following expression represents the perimeter of the rectangle:

And the width of that rectanle is represented wih this expression:

Therefore, based on the explained above, you can conclude that the lenght of that rectangle is given by:

Finally, simplifying the expression, you get:

Answer:kind of hard try 3x-x+2=4
Step-by-step explanation:
If the sample is random, it is not valid.
Answer:
its 21
Step-by-step explanation:
0,4 + 5,6 = 21
There is a 20.2 percent chance he will get at least one cola