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insens350 [35]
3 years ago
5

​$4000 is deposited in an account that pays an APR of 8.4​% compounded annually. How long will it take for the balance to reach

​$120,000​?
Mathematics
1 answer:
patriot [66]3 years ago
8 0

Answer: number of years that it will take for the balance to reach ​$120,000 is 42 years

Step-by-step explanation:

Initial amount deposited into the account is $4000. This means that the principal is $4000

P = 4000

It was compounded annually. This means that it was compounded once in a year. So

n = 1

The rate at which the principal was compounded is 8.4%. So

r = 8.4/100 = 0.084

Let the number of years that it will take for the balance to reach ​$120,000. It means that it was compounded for a total of t years.

Amount, A at the end of t years is $120,000

The formula for compound interest is

A = P(1+r/n)^nt

120000 = 4000(1 + 0.084/1)^1×t

120000/4000 = 1.084^t

30 = 1.084^t

t = 42 years

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Answer:

<em>6,174</em>

Step-by-step explanation:

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Answer:

Step-by-step explanation:

Answer:

Data

Equation               25x² + 64y² = 1600

Process

1.- Divide all the equation by 1600

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2.- Equation of a horizontal ellipse

                            

3.- Find a, b and c

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-Solve for c

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6.- Find the foci

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