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miss Akunina [59]
3 years ago
10

Renya plans to make a down payment plus monthly

Mathematics
1 answer:
tino4ka555 [31]3 years ago
3 0
Answer:

For the first, it would take 6 months to reach $3,500. For the second dealer, it would take 3 months to reach $3,500.

Explanation:

I hope this helps!
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30    

Step-by-step explanation:

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Step-by-step explanation:

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Zack sells full-grown ostriches for $925 and full-grown llamas for $890 each. Zack sold one less than twice as many llamas as os
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3 0
3 years ago
A dormitory has n students, all of whom like to gossip. one of the students hears a rumor, and tells it to one of the other n −
Alekssandra [29.7K]

Answer:

P(r)=\frac{(n-3)(n-4)....(n-r)}{(n-2)^{r-2}}

Step-by-step explanation:

From the question, we have the following condition:

p_1=p_2=1,\:and\:p_n=0

We know that each student who hears the rumor tells it to a student picked at random from the dormitory (excluding, of course, himself/herself and the person from whom he/she heard the rumor)

The 3rd student can therefore tell the rumour to n-2 students but only n-3 will accept it.

\implies p(3)=\frac{n-3}{n-2}

Consequently, the 4th student must not tell the 1st and second students.

\implies p(4)=\frac{n-3}{n-2}\times \frac{n-4}{n-2}

We can rewrite this to observe a pattern:

\implies p(4)=\frac{(n-3)(n-4)}{(n-2)^2}

\implies p(4)=\frac{(n-3)(n-4)}{(n-2)^{4-2}}

\implies p(r)=\frac{(n-3)(n-4)(n-5)...(n-r)}{(n-2)^{r-2}}

Hence, the probability that the rumor is told r times without coming back to a student who has already is:

P(r)=\frac{(n-3)(n-4)....(n-r)}{(n-2)^{r-2}}

See attachment for complete question

4 0
4 years ago
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