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zhenek [66]
3 years ago
7

How to solve ([120-2+(46-15)+2]-(9+4)

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
6 0

Answer:138

Step-by-step explanation:

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-4, -2, -1, -0.8, 0.8, 3, 10
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A freshly inoculated bacterial culture of Streptococcus contains 100 cells. When the culture is checked 60 minutes later, it is
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Answer:

P(t) = 100e^{0.0251t}

The doubling time is of 27.65 minutes.

Step-by-step explanation:

Exponential equation of growth:

The exponential equation for population growth is given by:

P(t) = P(0)e^{kt}

In which P(0) is the initial value and k is the growth rate.

A freshly inoculated bacterial culture of Streptococcus contains 100 cells.

This means that P(0) = 100. So

P(t) = 100e^{kt}

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This means that P(60) = 450, and we use this to find k. So

450 = 100e^{60k}

e^{60k} = 4.5

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k = \frac{\ln{4.5}}{60}

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So

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Doubling time:

This is t for which P(t) = 2P(0) = 200. So

200 = 100e^{0.0251t}

e^{0.0251t} = 2

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t = \frac{\ln{2}}{0.0251}

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Hope this helps!</span>
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729 divided 10 to the 3rd power
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Answer:

0.729

Step-by-step explanation:

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