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kompoz [17]
3 years ago
15

Emily writes a chain email and sends it to five friends. If each person who receives the email reads it within 5 minutes of the

email arriving and then sends it to five other people, how many people (including Emily) will have read the email 15 minutes after Emily first sent it?
Mathematics
1 answer:
DENIUS [597]3 years ago
3 0
At least 181 people will have read the email
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IrinaVladis [17]

There are 20! number of ways for everyone to do this so that at the end of the move, each seat is taken by exactly one person.

People are seated in a 2 by 10 rectangle grid. All 20 persons stand up from their seats and relocate to an orthogonally neighboring one upon the blowing of a whistle.

Now, we have to find the number of possible ways in which each seat is taken up by exactly one person after the move.

As the number of people is 20 and 20 seats are to filled exactly once.

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1 year ago
Writing to explain what are compatible numbers? What compatible numbers would you pick to estimate the diferrent of 777-248? Why
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Compatible numbers are rounded numbers. the compatible number for 777 is 800 , and the compatible number for 248 is 200 because I rounded to the nearest hundreds place


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8 0
2 years ago
10x=5x2−1. Complete the square
vitfil [10]

Answer: I did the test too

4 0
1 year ago
Take the following numbers and calculate the mean, median and mode. 75, 65, 70, 70, 55, 40, 55, 70, 65
emmainna [20.7K]

1. mean

To solve for mean, add all the numbers, and divide by the amount of numbers there is.

(75 + 65 + 70 + 70 + 55 + 40 + 55 + 70 + 65)/9 = 565/9 = 62 7/9 (a. 62.8)

2. Median

To solve for median, reorder all numbers from least to greatest, and the middle number is your median.

40, 55, 55, 65, 65, 70, 70 , 70, 75

Middle number is bolded

40, 55, 55, 65, 65, 70, 70, 70, 75

(b. 65)

3. Mode

To solve for mode, find out which number shows up the most.

(c. 70) shows up once more than the next number that has the most (55 & 65, which both have 2)

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4 0
3 years ago
Help me please please please​
Helen [10]
1. 0.75
2. 0.54
3. 0.1875
4. 0.25
5. 016
3 0
2 years ago
Read 2 more answers
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