The graph of ý= - 4x + 7 is: A. a point that shows one solution to the equation. B. a line that shows only one solution to the e
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Answer:
The dimensions of the playground that will enclose the greatest total area are 140 ft x 210 ft.
Step-by-step explanation:
We have a rectangular with sides "a" and "b", so that the area is:
The perimiter for this rectangle is
The fence is for the perimeter plus the division, which has a length of "a".
So the total fencing is:
We can express one side in function of the other, in order to optimize the area.
Then, we can write the area as:
To maximize the area we will derive and equal to zero
Then, the value for the other side of the rectangle is: