zoeynatejordan zoeynatejordan

21-09-2018
Mathematics

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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 feet and A is the total area in square feet. Find the width that maximizes the area of the curtains. What is the maximum area?

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autumnhammett1 autumnhammett1

21-09-2018

2

Completing the perfect square,

3

4

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