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Anastaziya [24]
3 years ago
12

As baby boomers enter their golden years, the number of people afflicted with Alzheimer's disease is expected to rise dramatical

ly. In a study published in the Journal of Neurology, the number of people with Alzheimer's disease in the United States age 65 years and over is projected to be
N(t) = 0.00525t² + 0.075t + 4.7 (0 ≤ t ≤ 4)

millon in decate t, where t = 0 corresponds to 2010.

(a) What is the projected number of people with Alzheimer's disease in the United States age 65 and over in 2020? (Round your answer to four decimal places.)
_________ million
(b) How fast is the number of people with Alzheimer's disease in the United States age 65 years and over projected to grow in 2020?
_________ million
(c) How fast is the rate of growth of people with Alzheimer's disease in the United States age 65 years and over projected to change in the period covered by the study?
_________ million per decade per decade.
Mathematics
1 answer:
dybincka [34]3 years ago
4 0

Answer:

Step-by-step explanation:

Given that the number of people with Alzheimer's disease in the United States age 65 years and over is projected to be

N(t) = 0.00525t^2 +0.075t+4.7,(0 ≤ t ≤ 4)

where N is in millions where year 2010 corresponds to t=0

For 2020, 10 years lapsed hence t= 1

a) N(1) = 0.00525(1)^2 + 0.075(1) + 4.7\\=4.78025

So 4.78025 million people

b) Growth = N(1)-n(0) =0.08025 million

c) N(4) = 5.084

Average rate of change = (5.084-4.7)/4 =0.096 million per decade

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statuscvo [17]

Answer:

0.3 chance of not drawing a blue marble.

Step-by-step explanation:

This problem can be found using the theoretical probability formula.

The formula is: P (desired outcome) = <u># of desired outcomes</u>

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Now all you have to do is input the numbers into the equation.

P(not drawing a blue marble) = <u>3</u>

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3/10 is equal to 0.3 as a decimal.

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3 years ago
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Step-by-step explanation:

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2 years ago
The sum of the lengths of two opposite sides of the circumscribed quadrilateral is 10 cm, and its area is 12 cm2. Find the radiu
PtichkaEL [24]

Answer:

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Step-by-step explanation:

The area of sircumscribed quadrilateral over a circle is equal to

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Use property of circumscribed quadrilateral: The sums of the opposite sides are equal.  

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Answer:

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