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spayn [35]
3 years ago
14

A culture started with 2,000 bacteria. After 2

Mathematics
1 answer:
Ket [755]3 years ago
3 0

Answer: In 10 hours, 4000 bacteria will be present.

Step-by-step explanation:

Given that 2000 bacteria grew to 2400 in 2 hours,

growth/ increase rate = 2400 - 2000

= 400 bacteria increase in 2 hours

Per hour is therefore 400/2 = 200 bacteria increase per hour

If the bacteria increases by 200 per hour

If 200 = 1 hour

X = 10 hours

We cross multiply:

X = 200 x 10

X = 2000

Therefore, a culture with 2000 bacteria at the same growth rate will have increased by additional 2000 in 10 hours

So, after 10 hours, number of bacteria will be 2000 + 2000 = 4000 bacteria

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Answer:

\frac{Area \:of\: rectangle\: A}{Area \:of\: rectangle\: B} =\frac{4}{3}

Step-by-step explanation:

Let the length of rectangle A be x units.

So, length of rectangle B

= x + 25% of x

= x + 0.25x

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Let the width of rectangle A be y units

So, Width of rectangle B

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\frac{Area \:of\: rectangle\: A}{Area \:of\: rectangle\: B} =\frac{xy}{0.75xy}\\\\\frac{Area \:of\: rectangle\: A}{Area \:of\: rectangle\: B} =\frac{1}{0.75}\\\\\frac{Area \:of\: rectangle\: A}{Area \:of\: rectangle\: B} =\frac{100}{75}\\\\\red{\bold{\frac{Area \:of\: rectangle\: A}{Area \:of\: rectangle\: B} =\frac{4}{3}}} \\\\

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3 years ago
What is the nth term rule of the linear sequence below?<br>13, 7, 1, -5, -11,...​
vredina [299]
Sry I don’t know try Socratic
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I need help with my math I'm doing solving equations using addition and subtraction
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The overhead reach distances of adult females are normally distributed with a mean of 202.5 cm and a standard deviation of
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Answer:

C. The normal distribution can be used because the original population has a normal distribution.

Step-by-step explanation:

When the original population has a normal distribution, we can use the normal distribution to solve the exercise.

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The original population are the adult females.

The problem states that:

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So the correct answer is

C. The normal distribution can be used because the original population has a normal distribution.

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