Ask question

Ask question

All categories

3 years ago

14

25 points T a classroom there are 15 men and 3 women. If teams of 4 members are formed and X is the random variable of the numbe

r of men in the team. a. Provide the probability function for X. X f(x) b. What is the expected number of men in a team?

1 answer:

Zepler [3.9K]3 years ago

6 0

I’m sorry i don’t know the answer

You might be interested in

6. What is the result of multiplying the digit in the hundredths place by

Setler [38]

Answer:

B.9

Step-by-step explanation:

9*1=9

6 0

3 years ago

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

8 0

3 years ago

If an arithmetic progression satisfies U4=7 , U8=15 .Find U10

Alja [10]

<em>Answer:</em>

<em>U10 = 19</em>

<em>Step-by-step explanation:</em>

<em>The sequence is </em> $Ux=(x*2)-1$ <em />

<em>x is the coefficient to U.</em>

<em>So, </em> $U10=(10*2)-1$ <em />

<em>Which means </em> $U10=20-1$ <em />

<em>Which means </em> $U10=19$ <em />

<em>And there is your answer.</em>

<em>Hope this helps. Have a nice day.</em>

6 0

3 years ago

The children's section is rectangular and has three of its corners at (-10, 10), (-10, 4), and (-3, 10). What is the area of the

Veronika [31]

Answer:

I don't know the answer, sorry! But I'm stuck on this question too and I was wondering if you figured out the answer?

Step-by-step explanation:

8 0

3 years ago

3/5 divided by 3 equals?

kaheart [24]

0.200000000000000000

6 0

3 years ago