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Alona [7]
2 years ago
13

2. One bag of fertilizer will cover 400 square feet. Find how many bags should be purchased to cover a garden that is

Mathematics
2 answers:
ahrayia [7]2 years ago
4 0

35*75 is

2625

2625/400 is

6.5625

Since you cannot have a decimal amount of a bag, you should purchase

(rounding)

7 bags of fertilizer

Illusion [34]2 years ago
3 0

Answer:

7 bags

Step-by-step explanation:

First thing you need to do is figure out the area of the garden. Area=length×width, so just put in your numbers, 35×75=2625 square feet. One bag covers 400 feet, so you divide the area by 400, 2625÷400=6.5625. You can't buys 6.5625 bags of fertilizer, so you have to go up to the next whole number which is 7.

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g If the economy improves, a certain stock stock will have a return of 23.4 percent. If the economy declines, the stock will hav
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Answer:

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Step-by-step explanation:

We can define the random variable of interest X as the return from a stock and we know the following conditions:

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E(X) = \sum_{i=1}^n X_i P(X_i)

And replacing the data given we got:

E(X) = 23.4* 0.67 -11.9*0.33= 11.759 \%

Now we can find the second central moment with this formula:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i)

And replacing we got:

E(X^2) = (23.4)^2* 0.67 +(-11.9)^2*0.33= 413.5965

And the variance is given by:

Var(X) = E(X^2) - [E(X)]^2

And replacing we got:

Var(X) = 413.5965 -(11.759)^2 =275.5105

And finally the deviation would be:

Sd(X) = \sqrt{275.5105}= 16.599 \%

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Answer:

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