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3 years ago

What is the first quartile of the following data set?

Mathematics

1 answer:

arlik [135]3 years ago

8 0

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Please help ty (7th grade)

Westkost [7]

Answer:

30. -5 , -2 , -2, 3 , 8

31. -7, -6, -6, 5, 8

32. -26, -15, -12, -12, 10

33. -34, -17, -11, 20, 21

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3 years ago

Read 2 more answers

Slope-intercept form for equation 1 and 2

aev [14]

Answer:

1 is the fist picture

2 is the second picture and if u calculate them both equals to 3 so that why the slope cross the same way

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4 years ago

An equation with a degree of 2.

user100 [1]

Answer:

With a degree 2 are called quadratic equations.

Hope I Helped

3 0

4 years ago

What is an equation of the line that passes through the point (-2,-8) and has the slope of 3

NeTakaya

Answer:

y = 3x - 2

Step-by-step explanation:

y +8 = 3 (x + 2)

y + 8 = 3x + 6

y = 3x - 2

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