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Bess [88]
3 years ago
12

How many different three-person relay teams can be chosen from six students?

Mathematics
1 answer:
ryzh [129]3 years ago
5 0
The first person can be any one of 6.
                 For each of those . . .
The second person can be any one of the remaining 5.
                 For each of those . . .
The third person can be any one of the remaining 4.

 Total number of ways to pick 3 people out of 6 = (6 x 5 x 4) = 120 ways.

BUT . . .

For each 3-person team, there are (3 x 2 x 1) = 6 ways to pick
the same three people.

In the 120 ways to pick 3 people, you'll find each different
group of 3 people picked 6 times, in a different order.

The number of different 3-person teams is

                         120 / 6  =  20 teams .
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valentinak56 [21]

Answer:

Step-by-step explanation:

density is mass divided by volume, so 25g divided by 10 cm = 2.5 g

4 0
3 years ago
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Metacognition's best definition can be described as an awareness and understanding of one's own thought processes. Answer A is obviously the incorrect choice as it refers to English, not psychology. Answer choice B makes sense as those who understand their own thought processes may be good test takers. Answer choice C is about learning new things which I would say does not necessarily apply to understanding what you know. It is about new knowledge whereas metacognition is about old knowledge. The final answer choice, D, does not apply since metacognition is not a process, but an awareness. I would say that the most applicable answer choice is B.

Hope that helps!
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7 0
3 years ago
Read 2 more answers
Can someone please help <br><br> Solve. 2a+3=9
dedylja [7]

Answer:

a = 3

Step-by-step explanation:

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8 0
3 years ago
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The total number of books in the library is 1155.there are 20 times more nonfiction books than fiction books. How many fiction b
alekssr [168]
There is 20x more nonfiction than fiction so you do
20+1=21
so then to find out what \frac{1}{21} of 1155 is we do
1155÷21=55
so then we times 55 by 20 because there are 20x more nonfiction than fiction
55x20=1100
soo now we know there is
1100 nonfiction books and
55 fiction books
to check whether we are right we can do
1100=55=1155
we are right because there is 1155 books in the library
hope i helped
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3 years ago
What is the sum of 6 5/3 +5 1/7
madreJ [45]
12 17/21 is the sum
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