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4 years ago

What is the total cost of an item priced $4.95 if there is 5% sales tax?

Mathematics

1 answer:

Paha777 [63]4 years ago

7 0

4.95+4.95×0.05=5.20
5 dollars 20 cents

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Three people become infected with a virus that spreads quickly. Each day that passes, the number of infected people doubles. How

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4 years ago

Read 2 more answers

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xeze [42]

Answer:

75%

Step-by-step explanation:

900 /1200= .75=75%

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3 years ago

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DIA [1.3K]

Answer:

1.) The correct answer is A.

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3.) The correct answer is B.

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Step-by-step explanation:

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3 years ago

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2 years ago

If you can explain your answer that’d be great!! Thank you!

Rasek [7]

Answer:

$A(t)=A_{0}e^{\frac{ln(\frac{1}{2})}{22}t}$

Step-by-step explanation:

This half life exponential decay equation goes by the formula:

$A(t)=A_{0}e^{kt}$

Where

$k=\frac{ln(\frac{1}{2})}{Half-Life}$

Since half life is given as 22, we plug that into "Half-Life" in the formula for k and then plug in the formula for k into the exponential decay formula:

So,

$k=\frac{ln(\frac{1}{2})}{Half-Life}\\k=\frac{ln(\frac{1}{2})}{22}$

Now

$A(t)=A_{0}e^{\frac{ln(\frac{1}{2})}{22}t}$

third choice is correct.

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3 years ago