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kicyunya [14]
3 years ago
7

A scientist runs an experiment involving a culture of bacteria. She notices that the mass of the bacteria in the culture increas

es exponentially with the mass increasing by 249% per week. What is the 1-week growth factor for the mass of the bacteria
Mathematics
1 answer:
ollegr [7]3 years ago
7 0

9514 1404 393

Answer:

  3.49

Step-by-step explanation:

The growth factor is one more than the growth rate:

  growth factor = 1 + growth rate

  = 1 + 249% = 1 +2.49

  growth factor = 3.49

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3 years ago
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24.5 is 33 1/3% of what number?
julia-pushkina [17]

Answer: 73.5

Step-by-step explanation:

The percent <em>33 1/3% </em>represents 1/3 of 100%. We can multiply 33 1/3% by 3 and get 100%. We need to find what 24.5 is 33 1/3% of.

Since 1/3 x 3 = 100%, then 24.5 x 3 must equal the number we're trying to find.

24.5 x 3 = 73.5.

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7 0
3 years ago
Neil drives at an average speed of 60 miles/hour to reach his destination 480 miles away. On the way back, he decides to increas
daser333 [38]

Answer:

  480/(x+60) ≤ 7

Step-by-step explanation:

We can use the relations ...

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Since the problem is posed in terms of time (7 hours) and an increase in speed (x), we can write the time inequality as ...

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Multiplying this by the denominator gives us a distance inequality:

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Or, we can write an inequality for the increase in speed directly:

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Any of the above inequalities will give the desired value of x.

4 0
3 years ago
90 to the nearest tenth
melamori03 [73]

Answer:

90

Step-by-step explanation:

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He has to ride 2 more miles
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