Answer:

Step-by-step explanation:
we know that
The perimeter of rectangle is equal to

In this problem we have


substitute in the formula and solve for L

simplify


Well for answer 23 is -6 √(5) + 6 √(2).
The answer for 25 is -3 √(5) - 2 √(6)
And the answer for 27 is -15 √(5) + 4 √(3) + 3 √(6)
Hope this helps :)
The slope is 2.5/1 such that 2.5 rise and 1 is run.
It represents the number of CD's.
It's 48 because 23+48=71
So 71-48=23