My son s homework can t be tutored, so I ask for help quickly!! 5

The number of students who fail mathematics is 140 * (1-5 7) = 40.

The number of people who fail the language is 140 * (1-3 4) = 35.

Assuming that the Chinese language in the 40 students who fail mathematics also fails, then the number of people who pass both Chinese and mathematics is 140-40 = 100 people;

Assuming that all 40 students fail in mathematics, then 140-40-35 = 65 students pass both Chinese and mathematics;

So agree with the statement on the second floor, for a range of 65 to 100 people.

140 5/7 = 100 [person].

140 3/4 = 105 [person].

Beat; There are 100 people passing in mathematics, and 105 people passing in language, and I object to the 205-140 = 65 people said on the first floor, you have no brains, and he asks you that there are 5 7 people passing in mathematics, and 140 is his corresponding division You can multiply it directly, and the 4 and 3 of language are also the divisions of 140, and you have no brains.

No, if you think about it, there are 140 people in the 5th grade, who have 5 7 math passes, 3 4 Chinese passes, and you can't get 5 people to pass by multiplying and multiplying 5 people passing, this number is too outrageous, believe me.

There are 100 students who passed mathematics, 105 students who passed language, and 205 people who added up to 205-140=65 students who passed.

It doesn't seem right to answer upstairs, right? According to the conditions given in the question, there is no specific value, it can only be a range, that is, a minimum of 65 people will pass both subjects, and a maximum of 100 people will pass both subjects.

Yours is of course wrong.

140*5 7=100 people.

140*3 4=105 people.

100 + 105 = 205 people.

205-140 = 65 people.

Mathematics: 140 5 7 100 people.

Languages: 140 3 4 105.

It's simple.

This question is inexplicable, and the question of the exam is not like this. Not a brain teaser or the paranormal or something? If it's really a question, try to answer it:

1. "Brain waves"Not a carrier of genetic information"Hopefully"Nor is it genetic information, genetic traits are determined at the time of embryonic formation that will not change due to human will. The carrier of human genetic information is DNA, which is transcribed into RNA, expressed, and translated into proteins, thus influencing phenotype.

Other acquired factors affect growth and development, and can also cause changes in phenotype.

Since 1 cannot be true, the following questions are not used.

If it had been established, then Little Japan would have been gone a long time ago. The brainwaves of so many people in China can be used as nuclear bombs, and whoever does not accept electricity will be able to do so. There are no dinosaurs in the world, and if you want to become a beautiful woman and a handsome guy, you can change it.

It's such an evil question, looking at this parent's question, it's still a bit of a foundation, but it's still too outrageous, where did your son go to high school.

First Hunger Question:

2 and 1 5-7 8

2+1 Bad Reputation 5)-7 8

53 Void grandson 40

1.Original ==(=

==2.Original = 124x38 + 124x51 + 124x14 + 76x96 + 76x7

38+51+14)x124+(96+7)x76=103x124+103x76

103x(124+76)

103x200

3.Original = 1 + (3-2) + (5-4) + (7-6) + ....99-98）

1+（1+1+……1) Note, a total of (99+1-2) 2 1=1+49=50

Listing a binary equation, let the rooster have x and the hen has y, then 3 4x=2 3y x=8 9y, and x+y=102 8 9y+y=17 9y=102, y=54, x=8 9y=48, so there are 48 roosters and 54 hens.

Featuring x roosters and y hens.

x+y=102

3/4)x=(2/3)y

This gives x=48 y=54

That is, there are 48 roosters and 54 hens.

There were three people watering the trees, each watering four trees, how many trees were watered in total, how many trees were watered in total, and three were many.

Multiply 4x3=12

There are 28 peaches 7 monkeys How many peaches are divided into each monkey How many peaches are divided into each monkey 28 7 Division 28 7=4

Hope it helps.

It is mainly a matter of the number of copies and the number of copies per copy and the total number.