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MrRa [10]
3 years ago
7

How many bacteria will there be in 4.5 hours? In 5 hours?

Mathematics
1 answer:
aleksandrvk [35]3 years ago
4 0

Answer:

4.5 hours in minutes = 270

Every 45 minutes, bacteria triples

You start with 50

Divide 270 (total time) by 45 (every time bacteria triples)

270/45 = 6

36,450 bacteria

Step-by-step explanation:

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7 pipes fill a tank in 50 minutes. How many minutes does it take if there are 11 pipes?
Alekssandra [29.7K]

Answer: With 11 pipes, you need 31.82 minutes to fill the tank.

Step-by-step explanation:

Let's define R as the rate at which one single pipe can fill a tank.

We know that 7 of them can fill a tank in 50 minutes, then we have the equation:

7*R*50min = 1 tank

Whit this equation, we can find the value of R:

R = 1 tank/(7*50min) = (1/350) tank/min.

Now that we know the value of R, we can do the same calculation but now with 11 pipes.

Then the time needed to fill the tank, T, is such that:

11*(1/350 tank/min)*T = 1 tank

We need to isolate T.

T = 1 tank/(11*(1/350 tank/min)) = 31.82 min

With 11 pipes, you need 31.82 minutes to fill the tank.

5 0
3 years ago
carmen participated in a read-a-thon.MR.cole pledge $4.00 per book and gave carmen $44.00.How many books did carmen read
finlep [7]

Answer:

11 books

Step-by-step explanation:

because if she gets $4 per book and gets $44 in total then that means she has read 11 books because 4 times 11 is 44.

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3 years ago
a figure was rotated around a vertical line segment resulting in the object below. which of the figues was rotated
oksano4ka [1.4K]

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A

Step-by-step explanation:

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2 years ago
20 POINTS!!!
Inga [223]

Step-by-step explanation:

I think option A is the correct answer

Because it is in ascending order

4 0
3 years ago
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If you had 78 years + 365 days gives you 443
Pavlova-9 [17]
365 days=1 year

78+1=79

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3 years ago
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