2 years ago

how much would 500 invested at 4% interest compounded continuously be worth after 7 years? round your answer to the nearest cent

Mathematics

1 answer:

vladimir1956 [14]2 years ago

4 0

Answer: the answer is 661.55

Step-by-step explanation:

interest formula: F = Pe^(rt)

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Let's say that number is hmmm "a"

now.. twice "a" is 2*a or 2a
4 less than that is " 2a - 4"

now, the product of those two fellows is 286, well ok

a( 2a - 4) = 286

thus

$\bf a(2a-4)=286\implies 2a^2-4a^2=286\implies a^2-2a^2=143
\\\\\\
a^2-2a^2-143=0\implies (a-13)(a+11)=0
\\\\\\
\begin{cases}
a-13=0\implies &a=13\\
a+11=0\implies &\boxed{a=-11}
\end{cases}$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

A=1/2 h(x+y) make x the subject

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Answer:

Step-by-step explanation:

A =1/2 *h (x+y)

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Answer:

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