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Veronika [31]
3 years ago
7

Ms. Sims is trying to find out how many residents in her neighborhood are interested in having a yard sale. She decides to just

ask the president of the neighborhood association to tell her the names of the people who she thinks will be interested in participating. Are the results of the survey reliable? Why or why not?
Mathematics
2 answers:
castortr0y [4]3 years ago
7 0

Answer: c. The results are not reliable because some new residents may not be on the list at the neighborhood association.

Step-by-step explanation:

miskamm [114]3 years ago
6 0
Yes because it is coming from a primary source

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Answer:

The projected enrollment is \lim_{t \to \infty} E(t)=10,000

Step-by-step explanation:

Consider the provided projected rate.

E'(t) = 12000(t + 9)^{\frac{-3}{2}}

Integrate the above function.

E(t) =\int 12000(t + 9)^{\frac{-3}{2}}dt

E(t) =-\frac{24000}{\left(t+9\right)^{\frac{1}{2}}}+c

The initial enrollment is 2000, that means at t=0 the value of E(t)=2000.

2000=-\frac{24000}{\left(0+9\right)^{\frac{1}{2}}}+c

2000=-\frac{24000}{3}+c

2000=-8000+c

c=10,000

Therefore, E(t) =-\frac{24000}{\left(t+9\right)^{\frac{1}{2}}}+10,000

Now we need to find \lim_{t \to \infty} E(t)

\lim_{t \to \infty} E(t)=-\frac{24000}{\left(t+9\right)^{\frac{1}{2}}}+10,000

\lim_{t \to \infty} E(t)=10,000

Hence, the projected enrollment is \lim_{t \to \infty} E(t)=10,000

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