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mrs_skeptik [129]
2 years ago
8

Who can help me on my math I’m failing can y’all please help me on some questions.

Mathematics
1 answer:
Gnoma [55]2 years ago
5 0

Answer:

8 & 17?

Step-by-step explanation:

8*2= 16

so that makes 17 one more then 8*2 and the sum of 17 and 8 =25

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A group of n people enter an elevator in a building with k floors. Each person independently selects a floor uniformly at random
____ [38]

Answer:

Hence the person stop at floor by at least one person will be

E(X)=(summation from K=1 to k)[1-{(k-1)/k}^n]

Step-by-step explanation:

Given:

There are n peoples and k floors in a building.

Selects floor with 1/k probability .

To find :

Elevator stop at each floor by at least one person.

Solution:

Now

let K= number of floor at which at least one person will be stopping.

For getting E(X)

consider a variable Ak =1 if a least one person get of the elevator

and values for k=1,2,3.....k

K=(summation From k=1 to k)Ak

E(K)=((summation From k=1 to k) E[Ak]

=(summation From k=1 to k)[1-{(k-1/k)^n

Hence the person stop at floor by at least one person will be

E(K)=(summation from K=1 to k)[1-{(k-1)/k}^n]

4 0
3 years ago
Maths 5x² - x(x + 4)​
alexgriva [62]
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3 years ago
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inna [77]
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3 years ago
1. Find the common difference and find the 75th term of the arithmetic sequence: 3, 6, 9, 12, ....
Ymorist [56]

Answer:

\boxed{225}

.

Step-by-step explanation:

Arithmetic sequence

Un = a + (n - 1)b

.

First step, find its difference

b = U_2 - U_1

b = 6 - 3

b = 3

.

So, we get

a = 3

b = 3

.

Finally, Let's find the 75th term

U_{75} = 3 + (75 - 1)3

U_{75} = 3 + (74)3

U_{75} = 3 + 222

U_{75} = 225

4 0
2 years ago
Read 2 more answers
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