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guapka [62]
2 years ago
5

(Need 3 answers) An entomologist discovered a new insect species. The population of the insect species can be modeled by P(n) =

3,450 · bn, where n is the number of days and b is an unknown positive base.
Based on the model, there were initially ?
insects.

If b = 1.75, the daily percent growth rate of the new insect would be ?
%.

If there are 55,200 new insects after 4 days, then b = ?
.
Mathematics
1 answer:
Strike441 [17]2 years ago
3 0

Answer:

  • See below

Step-by-step explanation:

<u>According to the model, the equation is:</u>

  • P(n) = 3450*bⁿ

Based on the equation, the initial number of insects is 3450

<u>If b = 1.75, daily growth rate is:</u>

  • 1.75 - 1 = 0.75 = 75%

<u>If  we get P(4) = 55200, find the value of b:</u>

  • 55200 = 3450*b⁴
  • b⁴ = 55200/3450
  • b⁴ = 16
  • b⁴ = 2⁴
  • b = 2
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Answer:

The ratio of the difference of the two means to Sidney's mean absolute deviation = \frac{4}{3.28} = 1.2195

Step-by-step explanation:

P.S - The exact question is -

Given - The means and mean absolute deviations of Sidney’s and Phil’s grades are shown in the table below.

                                       Sidney’s Grades           Phil’s Grades

Mean                                     82                                    78

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Proof -

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