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Dennis_Churaev [7]
3 years ago
13

2. An investment company pays 9% compounded semiannually. You want to have $8,000 in the future. How much should you deposit now

to have that money 5 years from now?
Mathematics
1 answer:
prisoha [69]3 years ago
5 0

Answer:

$5151.42

Step-by-step explanation:

The formula you need is

A(t)=P(1+\frac{r}{n})^{(n)(t)}

where A(t) is the amount after the compounding, P is the initial investment, r is the interest rate in decimal form, n is the number of compoundings per year, and t is time in years.  The info we have is

A(t) = 8000

P = ?

r = .09

t = 5

Filling in we have

8000=P(1+\frac{.09}{2})^{(2)(5)}

Simplifying a bit and we have8000=P(1+.045)^{10}

Now we will add inside the parenthesis and raise 1.045 to the 10th power to get

8000 = P(1.552969422)

Divide away the 155... on both sides to solve for P.

P = $5151.42

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Answer: it will take the faster computer 15 minutes to do the job on its own.

Step-by-step explanation:

Let t represent the number of minutes it will take the faster computer to do the job on its own. It means that the rate at which it does the job per minute is 1/t

If it takes the slower computer 30 minutes to do the job on its own. It means that the rate at which it does the job on its own per minute is 1/30

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Cross multiplying by 30x, it becomes

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Step-by-step explanation:

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Step-by-step explanation:

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