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3 years ago

A culture started with 6,000 bacteria. After 6

Mathematics

1 answer:

aivan3 [116]3 years ago

7 0

Answer:

9,400 bacteria at Hour 17.

Step-by-step explanation:

If at

Hour 0, it was at 6,000 bacteria then at

Hour 6, it would be at 7,200 bacteria

That means in 6 hours, the bacteria has grown by 1,200

Let's use a ratio:

hours : bacteria

6 : 1,200

1 : 200

17 : 3,400

Now after 17 hours, 3,400 new bacteria has joined our group of 6,000

6000+3400=9400

9,400 bacteria should be present at Hour 17

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3 years ago

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Solve by factoring 2x squared -6 = x squared+48

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4 years ago

Assume that the heights of women are normally distributed with a mean of 63.5 inches and a standard deviation of 2.2 inches. The

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Answer:

The number of women expected to meet the height requirements is 149 women.

Step-by-step explanation:

To solve the question, we note that

The population mean = 63.5 inches

The population standard deviation = 2.2

The range of required height = 58 to 80

We are required to find the proportion of women between the height range

The z value for 58 is given by

$z = \frac{x- \mu}{\sigma}$

Where:

x = Required statistic

μ = Population mean

σ = Standard deviation

= (58 - 63.5)/2.2 = -2.5 and

From the z-score table, we have P(z= -2.5) = 0.0062

The z value for 80 is given by

= (80 - 63.5)/2.2 = 7.5

From the z-score table, we have P(z= 7.5) ≈ 1

Therefore the proportion of women that satisfy the given range is between the two given probabilities, that is P(z= 7.5) - P(z= -2.5) or

1 - 0.0062 ≈ 0.994

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3 years ago