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lesya [120]
3 years ago
9

He population of the world was about 5.3 billion in 1990. Birth rates in the 1990s ranged from 35 to 40 million per year and dea

th rates ranged from 15 to 20 million per year. Let's assume that the carrying capacity for world population is 100 billion. (Assume that the difference in birth and death rates is 20 million/year
(a) Write the logistic differential equation for these data. (Because the initial population is small compared to the carrying capacity, you can take k to be an estimate of the initial relative growth rate. Let P be the population in billions and t be the time in years, where

t = 0

corresponds to 1990.)

dP/dt =

year 2100 P =
year 2500 P =
=

(b) Use the logistic model to estimate the world population in the year 2000. Compare with the actual population of 6.1 billion. (Round the answer to two decimal places.)
P =

(c) Use the logistic model to predict the world population in the years 2100 and 2500. (Round your answer to two decimal places.)



(d) What are your predictions if the carrying capacity is 60 billion? (Round your answers to two decimal places.)

year 2000 P =
year 2100 P =
year 2500 P =

Mathematics
1 answer:
Wewaii [24]3 years ago
7 0

Answer:

See explaination and attachment

Step-by-step explanation:

Please kindly check attachment for the step by step solution of the given problem.

I have the detailed answer as an attachment.

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RoseWind [281]

Answer:

2A/b

Step-by-step explanation:

A=1/2(b)(h)

2A=(b)(h)    Multiply both sides by 2

2A/b=h       Divide both sides by b

h=2A/b

7 0
2 years ago
Miranda needs to buy a bottle of honey. She notices that she can pay $4 for a
vitfil [10]

Answer:

The better one is $6 for 24 oz bottle

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2 years ago
6. Darcy jogs 3 km in 20 min.
SOVA2 [1]

Answer:

a) 9 km

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Step-by-step explanation:

7 0
2 years ago
M is the midpoint of AB. A is at (-5, 1) and M is (-1,4). Find the coordinates of B. Select one: O a (-3.2.5) O b.(-1.4) O c. (2
coldgirl [10]

Answer:

A (-3, 2.5)

Step-by-step explanation:

Midpoint formula is m=(x1 + x2/2), (y1 + y2/2)

So add the xs: -5 + -1 = -6

And the ys: 1 + 4 = 5

Then divide them by 2

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4 0
3 years ago
Ron is 8 years old and 40 inches tall. If he grows at the same rate every year, how tall was he when he was 5 years old?
Vadim26 [7]
He would be 25 inches tall.

40 divided by 8 would equal 5 so at age 1, he was 5 inches tall. So 5 times 5 which is how old he was, would equal 25 inches.
5 0
2 years ago
Read 2 more answers
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