3 years ago

What is 32.15 in expanded decimals

Mathematics

1 answer:

34kurt3 years ago

5 0

32.15 in expanded decimals :

3x10 + 2x1 + 1x0.1 + 5x0.05

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A person invests 7500 dollars in a bank. The bank pays 6% interest compounded semi-annually. To the nearest tenth of a year, how

kompoz [17]

Answer:

$13.0\ years$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=?\ years\\ P=\$7,500\\ r=0.06\\n=2\\ A=\$16,200$

substitute in the formula above

$16,200=7,500(1+\frac{0.06}{2})^{2t}$

$(2.16)=(1.03)^{2t}$

Apply log both sides

$log(2.16)=(2t)log(1.03)$

$t=log(2.16)/[(2)log(1.03)]$

$t=13.0\ years$

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4 years ago

What is 18% of 41? Pick the proportion that could be used to solve.

JulsSmile [24]

Answer:

7.38

Step-by-step explanation:

A proportion could be:

x divided by 41 must equal 18%, or

x/41=18/100

To solve, cross multiply

100*x=41*18

100x=738

Divide by 100 on both sides

x=7.38

Hope this helps! :)

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