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GREYUIT [131]
3 years ago
9

Bacteria X has a growth rate of 180 % per hour. Some amount of bacteria X are accidentally introduced into some egg salad. Three

hours after contamination, there were 35,000 bacteria X in the egg salad.
Find the initial number of bacteria X introduced into the egg salad?
Estimate the number of bacteria in the food 4 hours after contamination?
Mathematics
1 answer:
marta [7]3 years ago
6 0

There were about 6001 bacteria X bring introduced into the egg salad. The number of bacteria in the food 4 hours after contamination is 63000.

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A boat travels 475 miles in 30
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approx 15.5 hours

Step-by-step explanation:

475/30 = 15.83 miles per hour

245 = 15.83·t

t = 245/15.83

t = 15.5 hours

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Is the function y = 6 + 9 linear or nonlinear?
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Linear

Step-by-step explanation:

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A seal went 25 feet below sea level to catch a fish. A sea lion dove 10 feet less than three times as deep as the seal to catch
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65 feet below sea level.

Step-by-step explanation:

With the information provided, we can create the following equation for the position of the sea lion (p)

p = 3x - 10

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You are mowing lawns to make some extra money. The amount of money you make varies directly with the number of lawns you mow. If
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You earn 10 dollars per lawn
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The number of column inches of classified advertisements appearing on Mondays in a certain daily newspaper is normally distribut
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Answer:

The probability there will be between 280 and 360 column inches of classified advertisement

P(280≤X≤360) = P(-2≤Z≤2) = 0.9544

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean  the population = 320

The standard deviation of the Population = 20

Let 'X' be the random variable in a normal distribution

Let 'X' = 280

Z = \frac{x-mean}{S.D} = \frac{280-320}{20} = -2

Let 'X' = 360

Z = \frac{x-mean}{S.D} = \frac{360-320}{20} = 2

<u><em>Step(iii):-</em></u>

The probability there will be between 280 and 360 column inches of classified advertisement

P(280≤X≤360) = P(-2≤Z≤2)

                        = P(z≤2) -P(z≤-2)

                       = P(z≤2)+P(z≤2)

                      = 2P(z≤2)

                     = 2×0.4772     ( from normal table)

                    = 0.9544

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3 years ago
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