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Jxsolvez
11.07.2019 •
Mathematics
You invest $2000 in an account at 4.5% per year simple interest. how much will you have in the account at the beginning of the 8th year? round your answer to the nearest whole dollar.
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Ответ:
I will have $2721 at the beginning of the eighth year.
The beginning of the eighth year is the end of seven years of investing.
The formula for the future value (FV) of my investment is
FV = C(1 + r)^n
where C = my initial cash
r = the interest rate
n = the number of years
FV = $2000(1.045)^7 = $2722
Ответ:
set quadratic equations and use the pythagorean identity (21-x)^2+(42-X) ^2=(45-x)^2
expand and distribute both sides to get quadratic equation x^2-36x+180=0, and find x to be 6cm