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j0162
05.12.2019 •
Mathematics
2200 dollars is placed in an account with an annual interest rate of 7.25%. how much
will be in the account after 29 years, to the nearest cent?
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Ответ:
A = $2200(7.612) = $16,747.28
Step-by-step explanation:
You don't say whether this is simple interest or compound interest. I will assume you meant compound interest, for which the appropriate formula is
A = P(1 + r)^t, where P is the principal amount, r is the interest rate as a decimal fraction, and t is the time in years. Then:
A = $2200(1 + 0.0725)^29, or
A = $2200(1.0725)^29, or
A = $2200(7.612) = $16,747.28
Ответ:
distance =3.5*10⁶m
time=distance/speed = 3.5*10⁶m/3*10⁷ m/sec ≈ 1.17/10 =0.117 sec