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Anonymous users2024-02-15It is recommended that you buy the past recruitment questions of the First Affiliated High School of Chinese Normal University.
The physics is harder.
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Anonymous users2024-02-14First, it takes 103 * 4 = 412 (yuan) to unite
Savings 486-412 = 74 (yuan).
Second, if there are x people working overtime, then there are (103-x) people in class B (because A is more than B, so, 52<=x<103).
When there are 52 people in class A and 51 people in class B, 103 * yuan) is not in harmony with the topic and is abandoned.
x=58 so 58 people in class A and 45 people in class B.
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Anonymous users2024-02-131. How much money can be saved if two classes are combined and purchased as a group?
486-103 4=74 yuan.
2. How many students are in each class?
If there are less than 50 people in class A, then a=58, 103-58=45
There are 58 students in Class A and 45 students in Class B.
If there are 51 people in Class B, then there are 52 people in Class A.
It is not equal to 486 yuan, which does not match the title, so it is discarded.
So there are 58 people in Class A and 45 people in Class B.
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Anonymous users2024-02-12-103*4=74 yuan.
2. There is no situation where the number of people in two classes exceeds 50 at the same time, because 103* sets the number of people in class A to A, then there are:
A = 58 students, B class has 103-58 = 45 students.
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Anonymous users2024-02-11-103*4=74 yuan.
2. Solution: If there are x people in class A, then there are people in class B (103-x).
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Anonymous users2024-02-10Yuan) 486-412 = 74 (yuan).
A: The two classes can save 74 yuan by buying tickets as a group.
2.(If both classes are higher than 50 people, then 52 people in class A and 51 people in class B should pay a total of 52* yuan) is not established.
So Class B is under 51 people).
Set up a 5 yuan ticket and bought x tickets.
Then the yuan ticket was bought (486-5x).
There are a total of 103 people in the two classes, that is, 103 tickets have to be bought.
x+（486-5x)/
x = 45 yuan to buy 58 tickets.
So there are 45 people in class B and 58 people in class A.
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Anonymous users2024-02-09Problem 9 Do the auxiliary line to extend CB to the intersection AE and point F, according to the Pythagorean theorem, find BH=5, HA=5*; The angle c = 45 degrees, and the angle e is a right angle, so the side ce=hq, bh=hq=5, de=15*, 5+5*
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Anonymous users2024-02-08It's just such a few points, let someone help you make an exam paper, hehe.
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