Great gods help me to apply the discount number 1. The price of a commodity is 720 yuan, and the profit is 20% of the cost. If the profit is increased to 30% of the cost, how much will the price increase? 2. The store bought 100 color TV sets at a price of 2000 yuan each. After the purchase, the market is in good condition. It was sold at a retail price of 2200 yuan per set, and it didn't take long to sell 40 sets. Later, it was unsalable, and the end of the year was coming. In order to reduce inventory and speed up circulation, the shopping mall decided to give the remaining 60 sets a discount, asking how much discount on the basis of 2200 yuan per set. 3. The original price of an air conditioner in a shopping mall is 2,500 yuan, and the sales volume can be increased after discount 10. If the discounted sales amount is 65,438+000,000 yuan, what is the discount rate?
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There are five application problems in the first volume of grade three, help! How to arrange the life in grade three? The great gods help me talk about learning first, take notes in high school, listen carefully, if not, ask teachers and classmates. Life depends on your family's economic conditions. If you exercise, you can join the school's interest groups, student unions and the like ~ because I just went to college, and high school came like this, but everyone's living habits and rhythm are different, mainly depending on yourself!
Are there any application questions and answers for junior high school physics? Great Gods Help [Example 1] A train travels along a straight track, first traveling at a constant speed of 10m/s for 15min, then traveling at a constant speed of 10M/s for 10min, and finally moving forward again within 5min. What is its average speed in the last 2000 meters? [Analysis] According to the law of uniform linear motion, calculate the displacement within the required time or the time required to pass the required displacement. The average speed can be calculated by the average speed formula. [Solution] The displacement of the train in the first 15 minute and the next 10 minute are respectively: s1= v1t1=10×15× 60. The average speed of the first 25 minutes and the whole 30 minutes are: because the train moves at a constant speed of v2= 15m/s in the first half of the last 2000m, the elapsed time is: so the average speed of the last 2000m is: [Description] From the calculation point of view, the average speed of the general variable-speed objects at different times (or different displacements) is not equal. [Example 2] The displacement image of the object is shown in the figure. If the east is defined as the positive direction of displacement, try to find the velocity of the object at OA, AB, BC, CD and DE stages. [Resolution] The object starts to move from the origin to the east for 2s at t=0; The next 3 s to 5 s are still; Continue to move eastward in a straight line at a constant speed within 6s; From 7s to 8s, reverse westward at a constant speed, and return to the starting point after 8s; Move in a straight line from the origin to the west in 9s~ 12s. [Solution] From the S-T diagram, the speed of each stage is as follows: AB section: v2 = 0；; [Description] As can be seen from the figure, after t= 12s, the object * * * is 4m west of the origin, that is, the displacement of the object in this 12s is -4m, and the distance of the object in this 12s is (12+02+4) m. [Example 3] Figure 1 gives displacement images of four moving objects, and tries to compare their movements. [Analysis] The displacement images of these four objects are all straight lines, and the displacement increases with time, indicating that they all move in a straight line at a uniform speed in the same direction (the positive direction of displacement), but the speed and starting conditions are different. [Answer] A and B are different from T. The object C starts from the origin, starts from s 1 in front of the origin, and moves in a straight line at t=0. At time t 1, the object d starts to move in a straight line at a uniform speed in the positive direction. As can be seen from the figure, given the same time △t, their displacements △s are different: △ sc > △ sb > △ sa > △ SD. So their speed relationship is VC > VB > VA > VD. [Description] The movement of the objects corresponding to these four lines can be imagined as four 100 meter runners. As soon as the starting gun rang, two athletes, A and B, started at different speeds. Athlete C "steals the race"-before the starting gun goes off, it has already started at t0. So at the moment when the starting gun rang (t=0), the athlete had already run in front of s 1. D The athlete's reaction is slow, and it takes some time to start after the starting gun is fired at t/kloc-0, which is equivalent to starting from s0 behind the starting line when the starting gun is fired (t=0) (Figure 2). According to the meaning of graph slope, the slope of the displacement image with uniform linear motion is equal to the speed. Then [] A. The displacement in any 2s must be equal to twice the displacement in1s. The displacement in any period of time must be equal to its distance. C. If two objects have the same speed, they must have the same speed, and they have traveled the same distance in the same time. D if two objects have the same speed, they must have the same speed and the same displacement at the same time. [Analysis] When an object moves in a straight line at a uniform speed, the magnitude and direction of velocity V are constant. According to the formula s=vt, its displacement is proportional to time. Because the direction of velocity v is unchanged, its trajectory is a one-way straight line, and the displacement at any time is equal to the distance. When v 1=v2, it means that the size and direction of the two are the same, and the distance at the same time will be equal. However, when the velocity is | V 1, the displacement at the same time can be different. [A] A, B and C [Example 5] The S-T images of the movements of three objects A, B and C are shown in the figure. The following statement is correct: [] A.C. does accelerated linear motion. B. A moves in a curve. [Misunderstanding] Choose (b), (c) and (d). [Correct answer] Choose (a). [Error Analysis and Problem Solving Guidance] The displacement image (referred to as S-T diagram) of an object's motion shows the displacement law of the object's linear motion with time, and the displacement image is not the motion trajectory of the object. Option (b) mistook the graphic line for the trajectory of the object, which is completely wrong. The slope of the graph in the displacement image indicates the speed of the object, so option (a) is correct. Average speed = displacement/time, three objects have the same displacement in 0-t0 time, so there should be average speed = distance/time. At time 0-t0, the distance between object B and object C is equal, while the distance between object A is larger. [Example 6] Two cars A and B pass along a straight highway with the same displacement. Car A moves at the speed of v 1=40km/h in the first half, then car B moves at the speed of v 1=40km/h in the first half, and moves at the speed of v2=60km/h in the second half. Then the movement time of car A is like this, and the average speed of car A is T B, so the total displacement of the second car is the average speed of the second car [A] C. Calculation, it is not equal to the average speed. In variable-speed linear motion, if the average speed of the first half of the object motion is v 1, the latter is calculated. If the average speed of the first half displacement is v 1 and the average speed of the second half displacement is v2, the steam valve of the whole flat car will be closed before entering the station. When it slides at a constant speed of 300m, the speed of the train will be halved, and then it will continue to slide for 20s, and then it will just stop on the platform. Find the total displacement of the train and the displacement in the last 10 second. [Analysis] The research object here is the schematic diagram of the action according to the meaning of the question. Let's assume that the speed at which the train starts to brake and slide at point A is V, and the speed at point B is =20s. [Solution] Because vB is just equal to the average speed in the whole taxiing process, that is, vB = the movement time of the train in AB section and BC section must be equal. That is, t 1=t2=20s. Since the average speed of the train in AB section and BC section is v 1∶v2=3∶ 1 respectively, if the train is considered from the C end against the original train movement direction, the train will accelerate uniformly, and the initial speed will be zero. According to the relation of s∝t2, the displacement of the last 10 (i.e. the first 1 0 in reverse observation) is only 1/4 of the displacement of the last 20s (i.e. the first two 10 in reverse observation), so [explanation] Please understand. [Example 8] The length of a queue is L= 120m, and the traveling speed is V1=1.6m/s. In order to convey a command, the communicator runs from the end of the queue to the head of the queue at the speed of v2=3m/s, and then immediately returns to the end of the queue at the same speed as the traveling speed of the queue. Q: Yes. (2) How far is the correspondent's returning place from the team? [Analysis] There are two research objects here: the correspondent and the marching team, both of which move in a straight line at a uniform speed, and their motion diagrams are shown in the figure. Let the original position of the queue be AB. When the correspondent arrives at the queue from the tail, the queue has reached the position A', and the time taken is t. When the correspondent returns to the queue, the queue position is A ",and the time taken is t. During the time t, the correspondent and the queue are displaced. In time t', the sum of the displacements of the correspondent and the team is equal to L [solution] (1). When the correspondent arrives at the platoon leader from the platoon leader, there is a relationship: v2t-v 1t=L ① Let the speed of the correspondent returning from the platoon leader be v2', and its value is v2' = v1= 65433. There is also a relationship: v1t'+v' 2t' = 2v1t' = L2, so it takes time for the correspondent to leave the queue (at the end of the queue) and return to the end of the queue * * *: (2) The distance between the correspondent's return and departure is the distance that the whole team travels in the same time. That is, s' = v1t =1.6×123.2m =197.1m [description] According to the relativity of movement, if the moving team is taken as the reference, it can be simplified as the research object, that is, the relative of the communicators.
1 65438+1Oct. 28 13: 00 answer1third party in grade 12 Persian cats in Taiwan Province, China all pick up the same thing. "Don't talk" in Hong Kong is more stupid than the person who replies first. Personality problem: the baby has just been born without teeth and temper. It is foolish to die in Yibin, Sichuan. 1 sec contempt-I am not Huang Rong. 3. 14 16 De Gaulle might as well sleep in bed. It doesn't rain in the Red Sea. There are too many Japanese women (one second ごとににににににににににににににににににににに1239 He directly handed out a little charcoal fruit of Suzhou Tiger Charles de Gaulle (spring outing in Qiantang Lake). My love is dripping (Taiwan Province Province, China). Invisible Wings (Taiwan Province Province, China). 7 sweet days (China Taiwan Province). -4 butterfly wall lamp cyan can't find a telephone pole. Central American yawning stylus printer does not support mobile phone for one second for the time being. . Let's talk about the CPU that died in the battle of Toyoshima, Japan. Han Grandpa Schumann Aha Du Fu 3 1-Ben 0. 18 seconds Natural person British Beet-Grade 6 Millet Nervous System Cashmere Sheep March 23rd (Venus) China Taiwan Province Province Red, Green and Blue Da Vinci's friend's wife (the way to go is narrow) Bruto, Korea If only my art could bring me fame and free me from my sick old age! Shanghai Book of Rites Qu Li 19 is attached with some particle orientation instructions. Rowling, English, female, is the poc of Sunshine in Shanghai Hongkou Cinema. There may also be rainbows in European and American satellites-the central idea of Mencius that everything breeds three thousand worlds. The weasel, the longan and the fragrant kidney-Qiao Hong, a junior high school official of steam concentrated vinegar, signed to convince Jobs to draw the fruit directly on the plate. 19 14 weeks Haidian District Weiqiang Ruide Qinghai-Tibet Plateau Yama South America. After the end of 36 all-day programs, Chris Lee's daughters-in-law, red, green and blue-at the end of Qin Dynasty-Grade Three 1953, the two bytes of Rome represent the official name of Britain (modern football), Lu You (singing), the blind man in Oceania and Taiyuan, 5 kilometers away. In The Scholars, Dickens flies like a butterfly: flowers take Mencius, Du Fu (white) and the Analects of Confucius (a disaster) put a few drops of vinegar and copper. -The perfect lover of the first grade natural ranch: 183. On June 5th, The Sword of Miss Yue had only one order of magnitude. Horace Fool Love: The Queen of the Yellow River in 5000 Li Junji: Saving the Earth in the Andes with a big mouth means saving the future. The effect of standing and drinking water is as afraid of leaving a stigma. Acid shampoo memory, China Bank of the Mediterranean, Ctrl+C. Ctrl+v-liter method On April 22nd, my answer bell: Guo Meimei's spore plant Cao Huachun hihi byebye: Cyndi Wang-preventing water evaporation in Grade Two 12358 Zhoushan enemy tactics "Hihi Byebye`" Cyndi Wang's Fishing Song Guangming Athena London Dong Zhongshu's British place name suona. Nantong Guancaiqiu drinks red aluminum -3. Oral is smaller than benzopyrene's new nest: Fahrenheit, S.H.E Tomorrow 15 months: Avril Ramona Lavigne inter-satellite flight: The co-pilot of the Ministry of Public Security of Nakajima Megumi wiped GIS with cut onions to prevent pollution in the rural area of Qufu, Guangzhou, which is the most harmful to the take-off and landing of aircraft. Descendants of Soldiers, a front-wheel drive steam locomotive, Li Shangyin wishes the perfect lover in the grass by the river: 183, grade one to grade three.
Two guides and two exercises for the third-grade Chinese new course tender, efficient learning of the answers, great gods help me, sorry.
"Wolf" topic, see the answer. The great gods helped me kill it and came back late. I ate all the meat, leaving only bones. On the way, the two wolves traveled a long way. Eliminate fear and throw it at the bone. The wolf has a bone to stop, and the wolf still comes from. After the re-voting, the post-wolf stopped and the former wolf came again. The bones are exhausted, and the two wolves drive together. Tu embarrassed, afraid of attack before and after. There is a wheat field in Gu Ye, where the landowner earns a lot of money. Tu Naiben leaned against it, carrying a knife. Wolves are afraid to go forward, eyeing each other. When I was a child, a wolf left and a dog sat in front of him. After a long time, my eyes seem to be useless and very idle. Tu suddenly and violently, one knife to cut the wolf's head, several knives to kill it. Fang wanted to go, but when he turned to his salary, he saw a wolf hole in it, which was intended to attack him in the tunnel. The body is half in, and only the tail is exposed. After the slaughter, he died of a broken stock. But the wolf made a fake before he realized it, and covered it to lure the enemy. The wolf was afraid, too, but he was killed twice in an instant. What is the geometry of the beast? Stop laughing. 1, "A long way to go". What are the characteristics of wolves? Intense 2. How many elements does the opening of the text explain to us? What is the difference? Please answer in the original sentence. Four elements-time: late; Location: On the way; Characters: a butcher, two wolves; Event: One slaughter came home late and two wolves left. What did the butcher take out in a hurry? Work magic, ie have illusions about wolves. The butcher "threw a bone" for this. Give in to the wolf, give in, report the illusion and hope the wolf will retreat. 5. What characteristics can you see about wolves? Greed. 6. Please find out the sentences that describe the butcher's psychology. Tu Daxie, afraid of being affected by it before and after 7. What kind of psychological changes does Tu Daxie show the butcher at this time? Throw away your illusions and prepare to resist. 8. What action did he take? Running under it, holding a knife. 9. What about the performance of Wolves? Looking at each other 10, what are the characteristics? Cunning and cunning. 1 1. What characteristics can be seen from the butcher's killing of the former wolf? Tu suddenly and violently, one knife to cut the wolf's head, several knives to kill it. Is it only the wolf who is brave and decisive? Is the author mocking only the evil wolf? What did this story inspire you? No, the wolf is actually the embodiment of the wicked here, representing the greedy, fierce, cunning and stupid wicked, which shows that we should dare to fight and be good at fighting like butchers. This is the moral of this article. 13. How does the article portray the image of the butcher? Description of fear-throwing bones to avoid wolves. /big embarrassment-the wolf is still from the bones. /fear-enemies before and after it. /Revelation-The knife splits two wolves. These verbs describe the butcher's spirit of courage, wit, daring to fight and being good at fighting. 14, what is the function of the discussion at the end of the article? It is the author's view of the story written, which is not only a mockery of the tragic ending of the wolf, but also a praise of the butcher's brave and witty fighting spirit. Although wolves are greedy, vicious, cunning and insidious, they are also very stupid. Facing people with high wisdom and courage, they will eventually escape the fate of extinction. The discussion at the end makes the finishing point and reveals the theme of the article. 15, the wolf is very cunning, but in the end it brings its own destruction. Why? What did this story inspire you? People have wisdom, courage and strength that wolves don't have. For evil forces as insidious and cunning as wolves; We should not have illusions, compromise or yield, but dare to struggle and be good at it, so as to win. 16. Is the protagonist of this article a butcher or a wolf? Why? Wolf, because the wolf's action is the leading factor in the development of the story, the author's writing purpose is to satirize the wolf.
Qiuxuan Dance 10.25 8: 00 p.m. School Grade 3-5 Great God Help Grade 3 Fruit China Taiwan Province buy buy Buy China Taiwan Province King Queen West. Tibetan level 4 includes more than two people, namely, Chen Duxiu Dead Sea Common Law National Mall Card Zhuhai. . It's hard to catch up with South Korea! Shen Yanbing Dante and his two families are facing South Korea. Let's talk about the old man's pests16th century China Taiwan Province Province. I want to fly in the fourth grade, planning the upper right corner of Toshima naval battle. The blue crab shoots high with an arrow. S 1 Mao Zedong only gave 15 to the British female China Spider who loves Rowling in Taiwan Province more and more. Go ahead, Korean honey, longan in Taiwan Province province, emaciated Ma Yuanhao, seeking a rare fifth-grade Xu Zhimo, Israeli Ouyang Xiu 1 50 turtle tears, Chopin Goose France (Japan) 29 10000. 2 1% soda Li shangyin du mu Zhejiang haining ding France (Hugo) Xu zhimo Einstein 0. 18 seconds satisfied, please adopt.
Learning Weekly Sixth Grade Mathematics Answers 33-40 God helps you. When you see your question, it will be squeezed out of the question list by the newly raised question. If you don't answer the question, you will lose points and confiscate the reward points! So I'll give you a few suggestions: First, you can choose the correct classified questions or go to professional websites and forums related to your questions, so that more people will know the answers to your questions and more people will answer them. Second, you can meet more knowledgeable netizens and keep in touch with those who have answered your questions. When you encounter problems, you can ask these friends directly, and they will be more sincere and enthusiastic to find answers for you. Third, you must do what you should do, and some things must be solved by your own intelligence. It is impossible for others to do it for you! Only by doing it yourself can you truly belong to yourself. Others can only give you guidance and advice, and ultimately you have to rely on yourself. You may not accept my answer, but please accept my suggestion! Although my answer may not solve your problem, it will definitely make you use it better ~ ~