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Anonymous users2024-02-11wo is also from high school, although I don't know much, but we can communicate together.
I'm sure we'll have a common language.
My uc14717183
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Anonymous users2024-02-10648881937 I'm studying psychology, so let's have a chance to talk.
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Anonymous users2024-02-09Puppy love, rebellion, relationship problems, loneliness, study pressure,
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Anonymous users2024-02-08I don't want to write about it.
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Anonymous users2024-02-07No, because no one may have won these four titles, not that they have to win all four.
And because each person is limited to one entry, then each person can win a maximum of one championship.
Then, if all four championships are won by 4 out of 5 people, then there are a(5,4)=5*4*3*2=120 titles.
When 5 people only win 3 championships, there are a(5,3)c(4,1)=5*4*3*4=240 species.
When 5 people only win 2 championships, there are a(5,2)c(4,2)=5*4*4*3 2=120 species.
When 5 people only win 1 championship, there are a(5,1)c(4,3)=a(5,1)c(4,1)=5*4=20 species.
So the total possibilities are 120 + 240 + 120 + 20 = 500.
Explain. a(5,4) means that the lower right corner of a is 4, and the upper right corner is 4.
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Anonymous users2024-02-06It can be seen as having 5 different balls in 4 different boxes.
So the answer is a(4,5)=120
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Anonymous users2024-02-055 students sign up for the competition and compete for the championship, then they will avoid the same project as others.
That is, there is 1 person in each event, and there are 5 different championship possibilities in 1 event.
There are 4 x 5 different championships in 4 events.
So there are a total of 5*4 possible championships.
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Anonymous users2024-02-04Let the analytic expression of the primary function be y=kx+b
The primary function is parallel to the straight line y=-3x-5.
k=-3, we get y=-3x+b
Bringing (2,1) into y=-3x+b, the analytical formula of the b=7 primary function is y=-3x+7
Substituting (2,1) is because the primary function is found passes through the point (2,1).
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Anonymous users2024-02-03Parallelism should be equal in value k, so let y=-3k+b, and then from (2,1) we get: 1=-3 2+b, and the solution is b=7, so y=-3x+7.
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Anonymous users2024-02-02Let y=kx+b
Parallel to the straight line y=-3x-5, meaning k=-3
Re-substitution point (2,1).
B is out.
If you do more of this kind of question, you will be impressed.
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