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tangare [24]
3 years ago
10

There are approximately 400 million trees currently growing in the Amazon Rainforest, which covers approximately 5.5 million squ

are kilometers. The rainforest is being cleared at a rate of 20,000 square kilometers per year to make way for new farmland and to harvest wood for building supplies. Before this year, 250,000 square kilometers had already been cleared. A preservation consortium is trying to mitigate the loss of rainforest by planting new trees. They have already planted 3,000 square kilometers of trees and plan to plant 100 square kilometers of trees each year What total area will have been deforested after 1 year, 5 years, and 10 years use a table to organize your answers.
Mathematics
1 answer:
kotegsom [21]3 years ago
7 0

Answer:

d gbdsgbefd

Step-by-step explanation:

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You need to construct fence around an area of 3136 ft2. What are the dimensions of the rectangular pen that minimize the amount
borishaifa [10]

Answer:

Step-by-step explanation:

The the area of the rectangular pen be A = LW

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W is the width

Given

A = 3136ft²

3136 = LW..........1

Given the perimeter P = 2L+2W....... 2

From 1; L = 3136/W

Substitute into 2

P = 2(3136/W)+2W

P = 6272/W + 2W

In order to minimize the amount of material needed, then dP/dW = 0

dP/dW = -6272/W² + 2

0 = -6272/W² + 2

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cross multiply

6272 = 2W²

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W = √3136

W = 56ft

Since A = LW

3136 = 56L

L = 3136/56

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Hence the dimensions of the rectangular pen that minimize the amount of material needed is 56ft by 56ft

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