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gtnhenbr [62]
2 years ago
14

A school has a virus going around, and 8/25 of the students are absent due to the virus. An additional 20 students are out due t

o other reasons. If the school normally has 775 students, how many students are absent?
Mathematics
1 answer:
Stells [14]2 years ago
3 0

Answer:

268 students are absent

Step-by-step explanation:

First, multiply 775 by (8/25) to get the number of students out from the virus (probably weren't wearing masks or 6 ft apart from each other). This gives you 248 students. You also know that an additional 20 students are out due to other reasons. Add 248 and 20 and you get a total of 268 absent students.

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Anita plans to give her husband 3 shirts for his birthday. She narrows the search to 3 shirts from a selection of 17 shirts at D
Lunna [17]

Using the combination formula, it is found that she can select the shirts in 775,200 ways.

The order in which the shirt are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

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In this problem:

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T = C_{17,3} \times C_{20,3} = \frac{17!}{3!14!} \times \frac{20!}{3!17!} = 680 \times 1140 = 775200

She can select the shirts in 775,200 ways.

To learn more about the combination formula, you can check brainly.com/question/25821700

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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