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gregori [183]
3 years ago
12

Rain forests clean the air by producing oxygen. Some rain forest plants have healing properties, and can be used as medicine. Ra

in forests also are known to affect the water cycle and weather. The threat of deforestation , however, means that these important rain forests may disappear. Which statement best describes the main idea of the paragraph? Rain forests determine the weather. Medicine can be found in the rain forest. Rain forests are important for many reasons. Rain forests are disappearing.
Computers and Technology
1 answer:
Alla [95]3 years ago
7 0

Answer:

The answer is C. Rain Forests are important for many reasons

Explanation:

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Which is the incorrect statement
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The World Wide Web is a program that allows you to search for information on the Internet.
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if a country had to choose between becoming a plutocracy and becoming an ergatocracy which one would be the most intelligent cho
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The country should rather choose ergatocracy more than plutocracy

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3 years ago
The rod-cutting problem exhibits optimal substructure - that is, the optimal solution to maximizing revenue for cutting a rod of
VladimirAG [237]

Answer:

It is right to cut a rod into pieces to maximize revenue

when a rod is cut then rod lengths are an integral number of inches

Let's suppose length n and table of prices for i = 1,2,.......,n is given input and the maximum revenue for rods whose sum to n. If p is large, then the optimal solution requires no cuts.

Explanation:

Lets suppose possible cuts length and price

length i  = 1 2 3 4 5 6 7 8 9 10

price p   = 1 5 8 9 10 17 17 20 24 30

i       r        optimal solution

1      1          no cuts

2      5         no cuts

3     8          no cuts

4     10        2+2

5     13         2+3

6    17           no cuts

7      18        1+ 6

8       22       2+ 6

Optimal revenue in shorter rods :

r_{i} =max  p_{n} , r_{1} , r_{n-1} , r_{2} , r_{n-2} + r_{1}

After making a cut we have sub problems

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3 years ago
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