MATHEMATICS MIDDLE SCHOOL

The human population of Earth was approximately 6 billion in 1998. If the rate ofpopulation growth from then on was 2.3% per year, what would be the best
approximation for the human population (in billions) of Earth in 2020?

Answers

Answer 1
Answer:

Answer:

  9.89 billion

Step-by-step explanation:

At that rate of growth, the population is multiplied by 1.023 each year. After 22 years, the population would be ...

  6·1.023^22 ≈ 9.89 . . . billion
Answer 2
Answer:

Answer:

Let the equation for the population (P) growth be given by

P = P0ert, where P0 is the initial population in billioins at time t,

                           t is the number of years since 1987,

                           r is the rate of growth of population/year

In this case P0 = 5 billion and r = 0.02.  Putting these values into the equaation:

P = 5e0.02t

Year 1995 is 8 years after 1987, then the population would be

P = 5e0.02*8 = 5e0.16 ≈ 5.87 billion people

Step-by-step explanation:

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Also, if you are wondering why it is 11/2, you multiply two with five then add one, which is eleven. And since 2 is the denominator, you add that 2 in the bottom.

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Answers

Idk I’m sorry I just have to answer questions to ask more

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Answers

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Answers

Jenna has a bag that contains the following
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She selects a marble at random, and then, without replacing the first one, selects another marble at random.
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Answers

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