An applied problem about distance, time and speed A and B two cars from 380 km away from each other, meet on the way, known a and B two car speed ratio is 4:3, meet time ratio is 5:6, meet a and B two car each line how many kilometers

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• 1. Time and distance application questions (with answers)?
• 2. One to the distance speed time problem A car travels 60 kilometers per hour to and from a and B, and 40 kilometers per hour to and from B. find the average speed of the car
• 3. On the speed ratio, the application of the distance The speed ratio of car a and car B is 5:4. Car B starts from place B to place a first. After 72 kilometers, car a starts from place a to place B. the distance ratio between the place where the two cars meet is 3:4. How many kilometers are there between a and B?
• 4. What is the important knowledge of mathematics and English in junior high school?
• 5. It's self-study and method seeking, not the method of listening and reviewing in class, but the method of self-study with no one to teach=/ It's no use just talking about it. I need methods, but it's not the method that I should use in school. For example, I should learn from the first day of junior high school, or just remember the key points
• 6. A set of exercise books, including Chinese and English. 5 yuan, English is 3.7 yuan more expensive than mathematics, bought 5 sets of 146 yuan. How much is English? Don't solve equations!
• 7. I'm from Inner Mongolia. I'm going to senior high school soon. I'm top-notch in math. My Chinese and English are also good. My physics and chemistry are at the middle level Should I study arts or science
• 8. Primary school to junior high school English (urgent) 50 points! I vocabulary A fill in the words according to the sentence meaning and initials 1、-Yao Ming is tall strong. - Yes.He is very c______ . 2、The apple is g_______ .Please give me a red one . 3、 Here's a pencil.C_______ it yellow,please. 5、Yhe teacher is old but the student are y________ . B. Fill in the blanks according to the meaning of the sentence has、shoes、letter、sorry、feet 6、—Please give this _______ to Joan. —OK.I’ll give it to her. 7、Paul is short and he ______ blue eyeys. 8、—Are these your ______ ? —Yes,they are. 9、—Do you know Maria? —_______ ,I don‘t know her . 10、We have two hands and two______ . B. Fill in the blanks with the proper form of the words given 6、This is Li Ming .He ______ （have）big hands. 7、I have two big_______ （foot） 8、—Does she ______ （have）a small mouth? —Yes,she does. 9、Look!Her______ （eye）are big. 10、My hair_______ （be）black and long. (C) Read the passage and complete the sentences Hello!I’m a robot.This is my hand.Ihave no hair.This is my face .I have two big eyes and long nose ,I have two short legs and two big feet .I can walk.My arms are long and strong.I‘m your good friend, 36、The robot is a good________ 37、The robot doesn't have ________ 38、The robot has long ________ and__________ . 39、THe robot has big________ and__________ . 40、THe robot has________ and__________ arms.
• 9. What do you need to master in English for primary school to junior high school this year What should be paid attention to in writing English composition When to add ing, when to add es, etc How to change words into future tense, past tense, comparative
• 10. Primary school to junior high school English self introduction, with notes, thank you! Urgent!
• 11. Xiaolin and Xiaomei take a bucket to get water at the same time. It takes 4 minutes for Xiaolin to get full water. It takes 1 minute for Xiaomei to get full water. There is only one faucet. Who gets the water first to make the total time of waiting the least? What is the minimum time?
• 12. On a map with a scale of 1:6000000, the distance between a and B is 8 cm. How many kilometers are there between a and B? If the map is drawn on a scale of 1:4000000, how many centimeters should be the distance between a and B?
• 13. The engineering team built a canal, which was 375m in five days. According to this calculation, the task can be completed in 24 days. How long is the canal?
• 14. 1. The minute hand of a clock is 8 cm long. From 1:00 to 3:00, how many centimeters has the point of the minute hand increased? How many square centimeters has the area swept by the minute hand? 2. It's a figure, a circle with a square inside. The diameter of the circle just divides the square into two triangles. The diameter of the circle is 6cm. How about subtracting the remaining area of the square from the circle?
• 15. 16-8 how to calculate simplification
• 16. Several mathematical concept problems 1. The solution of the equation: make the value of the unknown number of equation () the solution of the equation 2. Merge similar terms: use the () rule to change the equation into () form 3. The coefficient is changed to 1: according to () of the equation, divide () of the unknown number on both sides of the equation to get the solution of the equation Please,
• 17. As for some concepts of mathematics, I have finished the third year of junior high school When we ask the question "when a value is, another conclusion is true", for example, "when the value of AM is, the quadrilateral amdn is a rectangle". I should take this value (for example: am = n) as a known condition to prove it, What about DN? If it's a square, or a square, it's a square
• 18. Who can work out this problem Leo Tolstoy, the great master of Russian literature in the 19th century, once wrote such a story in his work "does one need a lot of land?" There was a man named bahome who went to the grassland to buy land. The chief who sold the land offered a very strange price of "1000 rubles per day", which means that as long as he started from the specified place at sunrise and returned to the starting point before sunset, all the land enclosed by the route he took would belong to him. If he could not return to the starting point before sunset, he would not get any land, It costs 1000 roubles Bahome felt that this condition was good for him, so he paid 1000 rubles. The next day, at dawn, he quickly strode forward on the grassland. He walked a full 10 Russian miles (1 Russian mile ≈ 1.0668 km) before turning left. Then he walked a long time before turning left again. After walking another 2 Russian miles, he found that it was not early, and he was still 15 Russian miles away from the starting point, So I had to change direction and run straight to the starting point Finally, he arrived at the starting point on time, but died of overwork and spitting blood How many Russian roads did bahome walk on this day? What is the area of land surrounded by his route
• 19. How to get 32 by calculating four four with + - x
• 20. (1 + radical 2) x ^ 2 - (1-radical 2) x = 0 9(2X-1)^2 - 4(2X+3)^2 =0 3X^2 +10X+4=0