Why did the teacher say that it was the students behind the class when there was a mess in the class

Because the teacher felt that the students sitting in the front did not dare to be presumptuous under his nose, relatively speaking, the teacher felt that if the class was chaotic, the students in front were not so bold, and it was natural that the students in the back would be the students in the back. That's what I think.

Actually, it's like this. The students sitting in front of them were so close to the teacher that they didn't dare to make a big mess. And the students sitting in the back felt far away from the emperor, so they were unscrupulous.

The students in the back are usually taller, and it stands to reason that it is easier to hit the target with chalk or something, but the general teacher has very poor marksmanship and can't hit it at all, so he had to use a civilized way - scolded directly. The size of the front is like immature grass, and if it is scolded, it will be troublesome.

Because teachers are generally farsighted, they see far away, and they know that the students behind them will be more promising in the future, so they will naturally be more stringent.

Because most of the students who are generally in front of them have good grades, and they are close to the teacher, so they dare not be presumptuous. Hopefully, thank you!

Because good students are generally placed in the front, while bad students sit in the back, teachers prefer students in front.

Teachers generally put obedient and learning students in the front, and troublemakers in the back.

Generally, the back is far away from the teacher, and the back refers to 1Seat back 2The bottom 3In generalization, there are more in the back than in the front, just say the back.

Illusion! Generally, there are more good students in the front, and there are more boys in the back.

Because the good students sit in the front and the bad students sit in the back, the teachers are all the same, and they all favor the students with good grades.

It's the teacher's problem, don't care about your business, ignore him.

Ask the teacher to talk to your classmates

Because he didn't show the majesty of the teacher.

I got to know each other My classmates know that the teacher trusts them to do so.

I also want the teacher to know that if I indulge my classmates like this, we will misunderstand

Such students are drug-free, and if they are pulled out and shot, they can solve the food problem!

Just let them do it for themselves, what kind of teacher is not good, it's all a problem of tutoring, it has nothing to do with you, they will be punished in the future, but your problem can't be solved, that's their subjective consciousness, no one changes.

If it's the teacher's problem, the teacher is pitiful, and he has to reflect on it. But I guess the vast majority of the reason for this kind of thing is because of the students. If they don't understand the reasoning, then I think they should be handed over to school.

I think when they grow up, they will understand. It's a matter of personal awareness!

Do teachers respect their students? If the teacher does it, then I don't think such a student is worth teaching. Give it up!

Respect for teachers, the minimum number of courtesies.

Solution: There are x people.

x-(1 2)x-(1 4)x-(1 7)x<6 gives x<56, and x is a common multiple of 2,4,7,.

then x=28

There are x people in this class.

then x(1-1 2-1 4-1 7)<6

Solution x<56

And because the next must be a multiple of 2, 4, and 7, so x=28

Solution: There are x people.

x-(1/2)x-(1/4)x-(1/7)x<6x-25/28x<6

3/28x<6

x<56

Because x is an integer, and it is a common multiple of 2,4,7,.

So x=28 people.

It should be right.

-1 2 - 1 4 - 1 7 = 3 283 3 28 = 28 people.

If you are not mistaken, there are 28 students left to play football in the playground.

Or let the total number of people be x, and solve the integer solution of this inequality:

x -x/2 - x/4 - x/7＜6

= Meta. Set the peak power consumption x, and the valley power consumption is 140-x

Solution inequality: 140 get.

x 125 kWh.

When the amount of "peak power" exceeds 125 kWh, it is more cost-effective to use "peak and valley power".

1.There are x students in this class.

x-(x 2-x 4-x 7) is less than 6

The solution results in 3x less than 28*6

x=(28*3) 3=28 (person).

2.Set the "peak power" usage to x hours.

Less than 140*

The solution formula is less than 125 hours, and it is more cost-effective to use "peak-to-valley electricity".

1.Set x people.

1-1/2-1/4-1/7）x=6

3/28x=6

x=562.The description of the topic is incomplete, and since there is a time period with Fengdian, how to do it without explaining the time period?

1.Let the use of peak-to-valley electricity be x kWh, and the cost of method 1 and method 2 is equal to x<125

Therefore, when the peak-to-valley electricity is less than 125 kilowatts, it is more cost-effective to use peak-to-valley electricity2There are x students in the class.

00 because x market gets a multiple.

So x=28

A: There are 28 students.

There are x people in this class.

then x(1-1 2-1 4-1 7)<6

Solution x<56

And because the next must be a multiple of 2, 4, and 7, so x=28 is the correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution!

Correct solution! Correct solution! Correct solution! Correct solution!

1. There are a total of x people in the solution.

x/2+x/4+x/7+6=x

Solution x = 56 people.

2. If the solution is used, the peak and valley are 14 hours a day, the valley electricity is 10 hours, and the monthly electricity is 140 kilowatts, and the daily electricity is 14 3 kilowatts according to the calculation of 30 days in January, and the hour is x = 14 3 24 kilowatts, 30 * (14 x * yuan.

Method 2: 140* yuan.

So choose method one.

1.The remaining people are less than 6 people, and account for 1-1 2-1 4-1 7=3 28, assuming that there are n people left, the total number of people is n*28 3, and because the number of people can only be taken as an integer, so n=3, so the total number of people is 28

2.Let the amount of "peak electricity" be x, then the "peak and valley electricity" is 140-x, then there is "" = 140*, and x> = 125, when the "peak electricity" consumption is 125 degrees, it is more cost-effective to use "peak and valley electricity".

Suppose [4,7] = 28

28 2=14 (person) 28 7=4 (person) 28 4=7 (person) 28-14-4-7=3 (person) 3<6

There are 28 students in this class.

1. Answer There are 28 students in this class.

Question 2: Is there a mistake in the question, I don't understand.

(1)x-(x/2+x/4+x/7)<6

x<56

x-(x/2+x/4+x/7)>0

x>0 is the class size, so x must be an integer and is divisible by 2,4,7, so x=28

2) Solution: If the peak power is x kWh, then the valley power is (140-x) kWh < 140

1. Let the total number of students be x, and x is a positive integer, because there are 1 2 students are learning mathematics, 1 4 students are learning **, and 1 7 students are learning foreign languages, so there are 3 28 students playing football, and because there are less than 6 students playing football, both (3 28) x should be less than 6 and x is a positive integer, so the solution is x equal to 28

Nonsensical questions, and answers....

Set up x students in this class.

x- (one-half x + one-quarter x + one-seventh) is greater than 6x and less than 56

Take the least common multiple of 2,4,7. 28

Hey, no matter how stubborn a person is, as long as he still has feelings and a little conscience, he doesn't want to be a pillar of talent, just don't go down a bad path

As a teacher, there are reasons to understand his parents, background, and bad Let's talk to him more, really start from his point of view, encourage him more, and find his strengths

It's really not good, there is one more bad boy in society, otherwise, the time for a bad boy to appear will be pushed forward

Hey, this kind of teacher is very respectable

Respect again

Hope we can get better together

I also hope that the teacher can put away some troubles

Fools are in charge, and there are many things.

At one's own risk!

Ignore him, but seriously warn him not to influence others, tell the little classmates and female classmates, can't afford to hide, stay away from him, and the bullied classmates should also have a tougher attitude, you have to be their strong backing (my classmates used to have this kind of method, our teachers used this method, and it worked).

Care for him, educate him, have patience and perseverance.

Yes, 25 28x<=6, find the range of x, and you're good to go.

Nowadays, some people are always easy to be impulsive, and when they are impulsive, they will lose their minds and do things randomly, but after the impulse, they will regret endlessly. There was a hunter who had a very human dog. Every day when the hunter hunted the grounds, his dog stayed at home to help him take care of his two-year-old child and all his possessions.

One day the hunter returned, but he was horrified to find his dog sitting on the ground covered in blood and barking at him again, and his two-year-old child was gone. Seeing this, the hunter thought: Could it be that he was so hungry that he ate my child.

Thinking of this, the hunter suddenly lost his mind, raised his snatch, and beat his dog to death. Just after the gunshot, he heard the cry of his child, and in search of the cry, he found his child under the bed in one of his rooms, and saw a dead wolf by the bed. At this time, the hunter suddenly understood that he had killed the dog who was desperately trying to protect his child, and the hunter regretted it so much that he knelt beside his dog and wept bitterly.

The bridge of trust is always washed away by the flood of impulses. Once, I accidentally knocked off a classmate's fountain pen at school, and I helped him pick it up and said sorry, and the matter could have been settled here, but who knew that he said, "I'm sorry, it's over?"

When I heard this, I was also anxious and scolded him. Later, we scolded and I scolded, and finally fought. As a result, both sides were defeated, and they were quarreled with by the teacher, and later, when we met, it was like an enemy.

I'm usually impulsive, and this impulse is not something like fighting, swearing, etc., but I'm very impulsive when I usually do my homework. When I was writing my homework, I didn't even finish reading the questions, and I got a lot of questions wrong. I usually developed this habit, and when it came to the exam, I got 95 on the paper that was supposed to be 100, and I got 90 on the paper that was supposed to be 95.

It is always said: impulse is the devil. But there are still many people who are being controlled by that devil.

Now, no matter how big or small, you have to calm down first. Because there are many things that can only be known after careful adjustment and research, before that, if you make a random decision and act rashly, you will only hurt yourself in the end and regret it.

You have to be calm in your work, otherwise you will lose your life of hatred if you make a mistake and so on, you can name a few examples, such as a murderer, who lost his life's freedom because of impulse.

Hehe, teacher, it's very simple, first of all, let's talk about the reason for the impulse, because I can't restrain myself, why can't I restrain myself, because of the impulse; In fact, what kind of result is the most important thing, the result is the punishment, what is the punishment? In itself, it destroys the friendship between classmates. Adverse effects on schools.

Punished by the teacher. These three results would not have been punished if you were not impulsive. You can write from these aspects above!

Impulsiveness is the devil!!

Think about whether it's worth it.