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Neko [114]
3 years ago
12

Which is more 3 days for 72 hours​

Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
8 0

Answer: None of them is more. Both them are equal because 24 hours = 1 day.

1 day = 24 Hours

2 days = 48 hours

3 days = 72 hours

24 added to each one

Step-by-step explanation:

Nataly [62]3 years ago
3 0

Answer:

They both are the same.

Step-by-step explanation:

every day is 24 hours and that times three is 72

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The value of an investment A (in dollars) after t years is given by the function A(t) = A0ekt. If it takes 10 years for an inves
Ludmilka [50]

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20 years.

Step-by-step explanation:

We have been given a formula A(t)=A_0\cdot e^{kt}, which represents the  value of an investment A (in dollars) after t years.

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\$3,000=\$1,000\cdot e^{k*10}

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\frac{\$3,000}{\$1,000}=\frac{\$1,000\cdot e^{k*10}}{\$1,000}

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Take natural log of both sides:

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Using property \text{ln}(a^b)=b\cdot \text{ln}(a), we will get:

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\text{ln}(3)=10k\cdot 1

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\frac{\text{ln}(3)}{10}=k

\$9,000=\$1,000\cdot e^{\frac{\text{ln}(3)}{10}*t}

Dividing both sides by 1000, we will get:

9=e^{\frac{\text{ln}(3)}{10}*t}

Take natural log of both sides:

\text{ln}(9)=\text{ln}(e^{\frac{\text{ln}(3)}{10}*t)

\text{ln}(9)=\frac{\text{ln}(3)}{10}*t\cdot\text{ln}(e)

\text{ln}(9)=\frac{\text{ln}(3)}{10}*t\cdot1

10*\text{ln}(9)=10*\frac{\text{ln}(3)}{10}*t

10\text{ln}(9)=\text{ln}(3)*t

10\text{ln}(3^2)=\text{ln}(3)*t

2\cdot 10\text{ln}(3)=\text{ln}(3)*t

20\text{ln}(3)=\text{ln}(3)*t

Divide both sides by \text{ln}(3):

\frac{20\text{ln}(3)}{\text{ln}(3)}=\frac{\text{ln}(3)*t}{\text{ln}(3)}

20=t

Therefore, it will take 20 years for the investment to be $9,000.

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What is the answer to this question
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Answer:

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