Answer:
L = 1/2x
Explanation:
The perimeter of a rectangle is the sum of all four sides. In this case, the perimeter is represented by the expression 3 1/2x + 18.
Since the perimeter of a rectangle is the sum of the lengths of all four sides, so, if we know the perimeter and one side's length, we can find the length of the other side.
We can use the expression 3 1/2x + 18 to find the length of the rectangle.
Let's assume that the length of the rectangle is represented by the variable L and the width is represented by the variable W.
So we know that the perimeter of the rectangle is represented by the expression 3 1/2x + 18 and the perimeter of a rectangle is 2(L + W)
So we can write the equation
2(L + W) = 3 1/2x + 18
Expanding the left side of the equation:
2L + 2W = 3 1/2x + 18
Now we know that one of the sides of the rectangle is 1/2x so
L = 1/2x
Therefore, the expression that represents the length of the rectangle is 1/2x