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Bingel [31]
2 years ago
15

The percentage 21 is of 28 is equal to the percentage 30 is of 40 True? or false?

Mathematics
1 answer:
katovenus [111]2 years ago
5 0

Answer:

False

Step-by-step explanation:

75%

21

28 5.88

21 x 28

100

= 5.88

x 100% = 75%33.3333333333%

28 - 21

21

x 100% = 33.3333333333%

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The sum of three numbers is 36. The first number is two times the second number, and the second number is
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o (16, 8, 12)

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2 years ago
Altred is saving up money for a down payment on a house. He currently has $4739, but knows he can get a loan at a lower interest
Stella [2.4K]

Given the word problem, we can deduce the following information:

Principal amount = $4739

Future amount = $5336

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To determine the time to accumulate the $5336, we use the compound interest formula:

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We also note that the number of compounding periods must be 12 since the investment is compounded monthly.

We plug in what we know:

\begin{gathered} A=P(1+\frac{r}{n})^{nt} \\ 5336=4739(1+\frac{0.051}{12})^{12t} \\ Simplify\text{ and rearrange} \\ 5336=4739(\frac{12.051}{12})^{12t} \\ 12t=\frac{\ln\frac{5336}{4739}}{\ln\frac{12.051}{12}} \\ t=\frac{\operatorname{\ln}\frac{5,336}{4,739}}{12\operatorname{\ln}\frac{12.051}{12}} \\ Calculate \\ t=2.33 \end{gathered}

Therefore, the answer is 2.33 years.

5 0
1 year ago
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