A factory has a secret way of accounting. When they earn 300 yuan, it is recorded as - 240 yuan; when they use 300 yuan, it is recorded as 360 yuan. Guess how much yuan they may record when they use 100 yuan? When they earn 100 yuan, how much is it? Give me your reasons

A factory has a secret way of accounting. When they earn 300 yuan, it is recorded as - 240 yuan; when they use 300 yuan, it is recorded as 360 yuan. Guess how much yuan they may record when they use 100 yuan? When they earn 100 yuan, how much is it? Give me your reasons

∵ the difference between the income of 300 and 240 is 60, and the difference between the income of 300 and 360 is 60. Therefore, the income of 100 yuan is recorded as 100 + 60 = 160 yuan, and the income of 100 yuan is recorded as - (100-60) = - 40 yuan

A math club has a secret accounting method. When 300 yuan is recorded as - 240 yuan, when 200 yuan is used as + 240 yuan. When 100 yuan is used, it is recorded as () yuan. If - 80 yuan is recorded in the account, you think it is () yuan (fill in "income" or "use")

There is a secret accounting method in a math club. When 300 yuan is recorded as - 240 yuan, when 200 yuan is used as + 240 yuan. When 100 yuan is used, it is (+ 140) yuan. If - 80 yuan is recorded in the account, you think it is (140) yuan. ~ 523 will always answer for you. I wish you further study ~ ~ ~ if you agree with my

There is a "secret" way of keeping accounts. When they use 300 yuan, it is recorded as - 250; when they use 300 yuan, it is recorded as + 350, which means + 200 yuan
There is a "secret" way of keeping accounts. When they earn 300 yuan, it's recorded as - 250; when they use 300 yuan, it's recorded as + 350, that's the meaning of + 200 yuan

If the gap is 50 yuan, the original income will be - 50, and the original expenditure will be + 50

The figure shows the living expenses of Xiaoming family in May. ① what percentage of the total expenses are water and electricity, food and clothing? ② what percentage of the total expenses are other expenses
Diet accounted for 5 out of 13, clothing accounted for 4 out of 13, water and electricity accounted for 1 out of 13

5 + 4 + 1 = 10, other stations 3 points

I really don't know about football games!
According to the rules of the world cup, the 32 teams are divided into eight groups. In the group stage, four teams in each group play a single round robin game, and each team has three games. In each game, the winning team gets three points, the losing team gets zero points, and in the draw, each team gets one point, Then, the final, semi-final, third and fourth place final, and finals were held in the form of elimination
(1) According to the above instructions, how many matches were played in the 2006 World Cup?
(2) Suppose a team accumulates 6 points after the group game, please analyze whether the team must qualify. If so, please explain the reason; if not, please explain how many points can qualify?
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My little sister is very stupid to say that my father can't teach me when he works outside, and my mother doesn't understand. If anyone will, please tell me before 2:30 on May 18, or I'll die. Please help me, and I'll think about it again when I go back~

Ha ha, I know you are not a fan
(1) There are four teams in each group, and the internal competition of the group is 4 * 3 / 2 = 6 games
A total of eight groups, 8 * 6 = 48 games
Then two teams from each group will be promoted, and 16 teams will play 1 / 8 finals, 8 games, 48 + 8 = 56
Eight teams left, quarter finals, four games, 56 + 4 = 60
There are two semi-finals, one for three or four, one for finals, 60 + 4 = 64
(2) Not necessarily
Because if there are three teams that are 2-1 and one team is all negative (equivalent to the relationship between the three teams is rock scissors), then there will be three teams that have six points and can't be sure to qualify
To ensure that the line needs 7 points, that is, 2 wins and 1 draws
That's an interesting topic

Points rules of football match
The scoring rules of football match: three points for winning a game, one point for drawing a game and zero points for losing a game. A team needs to play 14 games in a certain season. Now it has played eight games, lost one game and got 17 points. How many games has the team won in the first eight games?
1: If this team plays 14 games, what's the maximum score?
2: Through the analysis of this team's situation, in the next six games, this team must win at least a few games in order to achieve the expected goal?

In the first eight games, 15 points were won in five games, 2 points were drawn in two games and 1 point was lost
There are still six games in the back, I guess three wins, two draws and one loss. Because we lose one game and are not eliminated, we can see that the elimination game is not a points match, so the team behind will not be too strong!
The highest is 35 points, unless I win, I'm 28 points!

The integral rules of mathematical football match are: 2 points for winning one game and 1 point for losing one game
The rules of points in football match are: 2 points for winning one game, 1 point for losing one game, 23 points for a team in 14 games, how many games does the team win? (2) can the total points of winning games of a team in 14 games be equal to the total points of losing Games? Please explain the reason by calculation

The team won X Games
2x+(14-x)=23
x=9
The team won nine games
Let a team win X Games in 14 games
2x=14-x
x=14/3
X is not an integer
The total points of a team in 14 games can not be equal to the total points of negative games

The scoring rule of football match is: 3 points for one win, 1 point for one draw and 0 point for one loss. After 26 rounds of fierce competition, Wuhan Yellow Crane Tower team won the fifth place of "China Super League" with 42 points, including 6 losses, so the number of wins is ()
A. 9B. 10C. 11D. 12

Let the number of winning games be x, then the number of flat games is (26-6-x). According to the meaning of the question, we get 3x + (26-6-x) = 42, and the solution is x = 11, then the number of winning games is 11. So we choose C

The ticket prices of a concert are as follows: 300 yuan for first class seats, 200 yuan for second class seats, and 125 yuan for third class seats. A shopping mall plans to use 5025 yuan to buy two kinds of tickets in the promotion activities, and organize 36 award-winning customers to watch. You can design several ticket schemes for the shopping mall to choose, and explain the reasons (using the method of junior one)

If there are x first class seats and Y second class seats, then the third class seats are (36-x-y)
300X+200Y+(36-X-Y)*125=5025
300X+200Y+4500-125X-125Y=5025
175X+75Y=525
7X+3Y=21
7X

Each football X Yuan, buy 4 football, pay 200 yuan, should find how many yuan?

Recovery = (200-4x) yuan