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agasfer [191]
3 years ago
10

The amount of cloth used to make four curtains is given by the function A= -4x^2 + 40x, where x is the width of one curtain in f

eet and A is the total area in square feet. Find the width that maximizes the area of the curtains. What is the maximum area?
Mathematics
1 answer:
nlexa [21]3 years ago
7 0

2

Completing the perfect square,

3

4


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