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sergejj [24]
3 years ago
14

The difference between the square roots of a number is 30. What is the number? Explain.

Mathematics
1 answer:
Kitty [74]3 years ago
8 0
The number is  225.

It square roots are  +15  and  -15 .
They are  30  apart on the number line.
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If you deposit $25,000 now at 6.5% compounded quarterly, how much will you have in 30 years?
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Answer:

$172,984.44

Step-by-step explanation:

We can use the formula

A = P(1 + \frac{r}{n})^{nt} to compute the final amount

Here P is the principal amount, the original deposit = $25,000

r is the annual interest rate = 6.5% = 0.065 in decimal

n is the number of times the compounding takes place. Here it is quarterly so it is 4 times a year

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A is the accrued amount ie principal + interest

Computing different components,

nt = 4 \times 30 = 120

r/n =  0.065/4 = .01625

1 + r/n = 1.01625

(1 + r/n)^{nt} = 1.01625^{120}

Therefore

A = 25000 \times 1.0625^{120} = 172,984.44


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