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valentinak56 [21]
2 years ago
8

I need help what’s 5.57 multipled by 4

Mathematics
2 answers:
andrew11 [14]2 years ago
8 0

Answer:

22.28

Step-by-step explanation:

Mrrafil [7]2 years ago
6 0
5.57 x 4 = 22.28





Explanation:
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If 3,000 bacteria, with a growth constant (k) of 2.8 per hour, are present at the beginning of an experiment, in how many hours
Ivenika [448]

Given:

Initial number of bacteria = 3000

With a growth constant (k) of 2.8 per hour.

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The number of hours it will take to be 15,000 bacteria.

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Let P(t) be the number of bacteria after t number of hours.

The exponential growth model (continuously) is:

P(t)=P_0e^{kt}

Where, P_0 is the initial value, k is the growth constant and t is the number of years.

Putting P(t)=15000,P_0=3000, k=2.8 in the above formula, we get

15000=3000e^{2.8t}

\dfrac{15000}{3000}=e^{2.8t}

5=e^{2.8t}

Taking ln on both sides, we get

\ln 5=\ln e^{2.8t}

1.609438=2.8t                  [\because \ln e^x=x]

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0.574799=t

t\approx 0.575

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2 years ago
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