Cho mk xin đáp án mấy câu này với ạ

7/ X × 1,2 – 3,45= 4,68. Giá trị của x là A. 67,75 B. 677,5 C. 6,775 D. 6775

Ai lm bt nay jum e vs ạ can gap

Một lọ hoa đang đứng yên trên mặt bàn. Hãy nêu tên các lực tác dụng lên lọ hoa, chỉ ra phương, chiều của hai lực đó. Tại sao lọ hoa lại đứng yên

Giúp mình hai bài 3 và 4 vs nha , hình mk tự vẽ cx đc . Cảm ơn các bn nhìu

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks Most people agree that computers are the most important (31)_______ of the 20th century. The first business computers (32)_______ introduced just about fifty years ago, and now they are being used in a wide variety of fields, from banking to space travel. (33)___________, until just a few years ago, computers were very large, expensive machines owned by large existed, very few people had ever seen one an even fewer had used one. Then in the 1970s the silicon chip was invented. Because this electronic device could (34)_______ a large amount of information in a very small space, computers could be much smaller and less expensive than the huge mainframe computers used by corporation. Some computer manufacturers believed that people might want to have computers in (35)_______ homes, offices, and schools, so the personal computers was born. 31. A. inventory B. invent C. invention D. inventive 32. A. were B. are C. have been D. had been 33.A. So B. Also C. Moreover D. However 34. A. provide B. stock C. store D. hide 35. A. its B. his C. our D. their Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions ‘The best age to start learning the violin is between three and six,' says Margaret Porter, a violinist and music teacher. 'It's the time when you are learning about the world.' Margaret, who lives in London, prefers to take pupils at three and four, although she has made lots of exceptions for keen five-year old. When she started teaching the violin in 1972, her first class consisted of her children's five-year-old school friends. Magaret's pupils have group lessons. Each group has about a dozen pupils and each lesson lasts an hour, once for night. In addition, each pupil has one individual lesson a week with her. Parents also have to attend the classes. It is important that the parents take an active interest in the lessons. From the earliest lessons pupils learn to play by ear. They do not even try to read music until they have been playing for several years, and for a long time there is a big difference between their playing and reading of music. Margaret says that her method is not supposed to produce great violinists, and always suggests that pupils who perform particularly well should leave and study the violin using more traditional methods. 36.When did Margaret Porter start teaching the violin? A. at the age of 36 B. in 1972 C. in 1927 D. at the age of 34 37: What is the writer trying to do in the text? A. explain why Margaret likes teaching the violin B. describe a different way of learning the violin C. give advice on how to find a music teacher D. explain why Margaret has a lot of pupils 38: What opinion does Margaret have about her best pupils? A. They ought to find another teacher. B. They will become great violinists using her method. C. They could try harder. D. They take several years to learn to read music. 39: Magaret's first pupils were..................... A. her children B. three-and four-year-old C. her own friends D. her children's friends. 40. Why should someone read the text ? A. to discover how Margaret learnt the violin B. to learn why it is important to read music C. to find out about Margaret’s teaching method D. to learn why children should play violin.

Choose the best answer a, b, c or d to complete the sentence. (Questions 1-10) 1. Day of the Deal is celebrate…………..November 1 st in Mexico. a. On b. in c. at d. during 2. People throw tomatoes…………each other at La Tomatina in Bunol. a. On b. to c. at d. for 3. The festival starts with an opening…………where people walk through the streets. a. Party b. ritual c. feast d. parade 4. Summerfest is the world’s largest……….festival. It features more than 700 bands performing on 11 stages. a. Arts b. music c. religious d. seasonal 5. In the UK and US, people give colored chocolate eggs to each other at………. a. New Year b. Halloween c. Christmas d. Easter 6. ………..do people celebrate Diwali ? – They celebrate it with music, lights, fireworks and traditional sweets a. How b. What c. Why d. where 7. Bon Jovi will………at the 2019 Rock in Rio music festival in Brazil. a. Display b. perform c. gather d. attend 8. ……….., the hard rock Louder Than Life festival was cancelled. a. After raining heavily b. When it rains heavily c. Due to heavy rain d. Despite heavy rain 9. What is the highest prize awarded at the Cannes Film Festival? a. Palme d’Or b. Oscar c. Golden Globe d. Black Lady 10. “ In the Cooper’s Hill Cheese Rolling Festival, people attempt to chase a rolling cheese wheel down the hill”. “………….” a. That’s a great idea b. Oh, I totally agree c. It sounds crazy d. Ok, that’s interesting What festival are they? Write the name of the festival. (Questions 11-20) Christmas Tet La Tomatina Halloween Thanksgiving Lunar New Year Mid-Autumn Festival Ghost Festival Children’s Day Easter Rio Carnival Diwali 11. It is the Vietnamese New Year marking the arrival of spring based on the Lunar calendar._____________ 12. It is celebrated on October 31, and children dress up in costumes, visit people’s houses and ask for candy or treats.__________________ 13. It is a Brazilian festival held before Lent. The highlight of Carnival is the Samba Parade which is not to be missed!________________ 14. It is a religious holiday which celebrates the birth of Jesus Christ.________________ 15. It is a tomato fight festival which takes place in August in Bunol, Spain.___________________ 16. It is the Hindu festival of lights, which is celebrated in autumn every year.__________________ 17. It is celebrated in Canada and the United States as a day of giving thanks for the blessing of the harvest and the new year.________________ 18. It is traditional Buddhist festival in which ceremonies are held to welcome the ghosts and spirits.___________________ 19. It is held on the 15 th day of the 8 th lunar month with the fullest moon at night. Mooncakes and lanterns are the features of the festival.________________ 20. It is a holiday which celebrates the resurrection of Jesus from the dead.___________ NhANH HỘ MK VỚI MK CẦN GẤP TRONG 5 PHÚT

tìm m là số nguyên tố để m phần 35 là phân số tối giản

Làm giúp mik nhé Tìm điều kiện để pt có no kép,tìm kép đó theo m a)(m-1).x^+m-2=0 b)(m+3).x^-mx+m=0 c)mx^-2(m+2)-x+9=0 d)(m+2).x^+6mx+4m+1=0 e)4x^+4mx+m+6=0

Hãy giải thích: vì sao một vật chuyển động trong trọng trường, khi động năng tăng thì thế năng giảm và ngược lại