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Ray Of Light [21]
2 years ago
6

Please help I've been getting this same problem wrong all day lol

Mathematics
2 answers:
worty [1.4K]2 years ago
7 0

Answer:

9\sqrt{2}

Step-by-step explanation:

=3\sqrt{2}+6\sqrt{2}

\mathrm{Add\:similar\:elements:}\:3\sqrt{2}+6\sqrt{2}=9\sqrt{2}

kolezko [41]2 years ago
5 0

Answer:

I came up with the answer of 12.27 so D

Step-by-step explanation:

I hope this helps :3

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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.

To find:

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

Solution:

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]

\dfrac{1.609438}{2.8}=t

0.574799=t

t\approx 0.575

Therefore, the number of bacteria will be 15,000 after 0.575 hours.

4 0
2 years ago
Solve the system of equations using substitution or graphing.
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Which graph shows the line y=35x−3?
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Answer:

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Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
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Jenni bakes two rectangular cakes to put on top of each other. Each cake is 9 in wide, 13 in long, and 2 in high. How many squar
omeli [17]

Answer:

Step-by-step explanation:

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V=2(13*2*9)= 468 in^2 of frosting for the cake

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3 years ago
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