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Write the following function expression, and point out the constant and variable, independent variable and function The relationship between circle area s and diameter D
10.5 times of a number is 14 times more than 7.5 times. What's the number?
10.5 times of a number is 24 times more than 7.5 times. What's the number
10.5X-7.5X=14
The solution is: x = 14 / 3
Fill in the appropriate number. 1,2,3,6,5,10,7,14___ ,___ .
1,2,3,6,5,10,7,14,（9 ）（18）
Rule: there are 1,3,5,7 every other one; (the first term is 1, the tolerance is 2 of the arithmetic sequence);
2,6,10,14,18 (the first item is 2 and the tolerance is 4)
2 / 7 of a number is 5 / 14. What's the number
If you divide 5 / 14 by 2 / 7, that's five quarters
Xiao Ming invited four students to his home to play. He poured a 2 - liter bottle into 5 cups on average, and then each one drank one
What percentage of the bottle did Xiao Ming drink? How many liters did the guests drink?
Xiao Ming drank one fifth of the bottle, and the guests drank 1.6 liters of the drink
Xiao Ming bought 5 tins of drinks for 10 yuan. Xiao Honghua bought 3 tins of drinks for 1 yuan. He asked which kind of drinks are cheap and how much is it for each tin. He asked to write an arithmetic
The problem of grade two in primary school requires the formulation
10 △ 5 = 2 (yuan) 1 △ 3 is about equal to 0.33 2 > 0.33 A. Xiaohong is cheap
There was a bottle of 2 liters in total. My mother drank one-half of this bottle, my father drank two fifths of it, and Xiao Ming drank the rest. How many milliliters did Xiao Ming drink
Help me. The first question of challenging myself
1-0.5-0.5x0.4 = 0.3, i.e. 3 / 10;
2x1000x3/10=600（ml）
A bottle of two fifths of the beverage, Xiao Ming and some, drink and the rest of the ratio is 3; 2. How many kilograms of drinks are left?
Drink and the rest of a total of 5, drink is 3 / 5, the rest is 2 / 5, with the total number of a bottle multiplied by the right formula: 3 + 2 = 5, drink: 2 / 5 × 3 / 25 = 6 / 25, no drink: 2 / 5 × 2 / 25 = 4 / 25, I do not know how many kilograms of this 2 / 5 drink, your own unit name, give me, all by hand
A bottle of 2 / 5kg drink. After Xiao Ming drinks some, he Lede drinks the remaining 2:3. How many kilograms of drink are left?
2 / 5kg = 400k, 2 plus 3 equals 5 parts, 400 △ 5 = 80K, 80 × 3 = 240k, 240k = 0.24kg, OK!
Xiao Ming bought 24 bottles of drinks, one for every three empty bottles. How many bottles does Xiao Ming have?
Twenty four bottles can be replaced by eight bottles. If you borrow an empty bottle, there are nine empty bottles. If you borrow three bottles, you can replace one bottle. So you drink 36 bottles
RELATED INFORMATIONS
- 1. A fraction is multiplied by 23 and 47 respectively. The sum of the two products is 1314. The fraction is______ ．
- 2. A kind of beverage has two packaging specifications. The capacity of large bottle is 1.5 liters, which is three times of that of small bottle. The unit price of small bottle is 1.8 yuan, which is 3.2 yuan cheaper than that of large bottle Which kind of packing is more suitable? How many bottles do you want? How many lines do you need?
- 3. The supermarket sold 24 kinds of a drinks and 36 kinds of B drinks today. The simplest integer ratio of a drinks is () and the ratio is () to sell
- 4. The density of the drink is 950kg / m3, the weight of the ice is 0.9kg, the weight of the ice is 20g, the area of the bottom of the cup is 50m2, the depth of the drink is 10cm, what is the buoyancy of the ice The density of the drink is 950kg / m3, the mass of the ice is 0.9kg, the mass of the ice is 20g, the area of the bottom of the cup is 50m2, the depth of the drink is 10cm, what is the buoyancy of the ice? What is the total pressure of the drink and the ice on the bottom of the cup? G = 10N / kg, pay attention to the unit conversion
- 5. According to the regulations of the cold drink shop, four empty bottles can be exchanged for one bottle of soda after drinking. There are 29 students in class 2 (1). How many bottles of soda does the monitor need to buy to drink one bottle of soda for each student?
- 6. There are 27 RMB with face value of 2 yuan and 5 yuan, totaling 99 yuan. How many RMB with face value of 2 yuan and 5 yuan?
- 7. The quantity ratio of cola to sprite in cold drink shop is 3:4, sprite is 60 cases, so Cola is? Case
- 8. In midsummer, 10 students went to the cold drink shop and handed over the beverage statistics they needed to the waiter: Six wanted coke, five wanted sprite, Five people want juice, three people want Coke and Sprite, two people want sprite and juice, and one person wants all three. Q: how many people have drinks and drinks? (three situations.)
- 9. If you drink 50% of a box of drinks, there are 18 bottles left. If you drink 6 bottles, how many bottles are left?
- 10. There are 12 bottles of drinks, 11 of which are of the same quality, and another one is heavier. How many times can we guarantee to find out the heavier one?
- 11. If the unit price of a newspaper is a yuan per copy and X is the number of copies of the newspaper, then the relationship between the total price of the newspaper y (yuan) and X is () () independent variable
- 12. Send each letter 0.6 yuan, there are n letters need y yuan to list the function relationship, find the range of independent variable n is equal to 0
- 13. It's 2.6 yuan per box of milk. The store promotes sales. If you buy five boxes, you get one free. How much does it cost to buy 30 boxes of milk?
- 14. The unit price of milk in the shop is 2.6 yuan per box. The shop has a sales promotion on New Year's day. If you buy five boxes, you get one free. How much does it cost to buy 30 boxes of milk at least?
- 15. My mother bought 6 boxes of milk and 5 packets of biscuits in the supermarket, which cost 27 yuan in total. The money of 3 boxes of milk and 2 packets of biscuits is equal. How much is each box of milk and 1 packet of biscuits? How to calculate,
- 16. Lejia supermarket has a sales promotion. 6 bottles of yoghurt are priced at 5 yuan. How much does it cost to buy 49 bottles of yoghurt at least? One for six
- 17. If each monkey has 8 peaches, there are still 10 peaches left. If each monkey has 9 peaches, then one monkey has less than 9 peaches, but can still get peaches. How many are there at most?
- 18. The mother monkey divides the peach for the little monkey. If no little monkey divides four peaches, there will be 15 peaches left. If each little monkey divides five peaches, there will be 10 peaches left. How many monkeys are there
- 19. Mother monkey picked some peaches. The little monkey ate one seventh of the total on the first day, and the rest one third on the second day. What percentage of the total on the second day
- 20. The monkey mother picked 17 peaches for her children to eat. The big monkey said it would get 3% of the total, the second monkey would get 2% of the total, and the little monkey would get 3% The mother monkey asked the three monkeys not to cut the peaches apart. Do you have any good idea?