Đổi các khối lượng sau ra kg rồi viết kết quả dưới dạng lũy thừa của `10`. a) `125mg` b) `76 Gg` c) `12,05` tấn

tìm m biết : a) m ² ≥0 b) (m-3) ² ≥0 c) m ²-6m+9 ≥0

cơ hội lấy hay nhất ai nhanh ,đúng thì được BÀI TÌNH : ( 46+53+34+47+237+723+851) x 22 x 45 x 2,5 x 4 {chú ý tính bằng cách thuận tiện}

Cho : P(x) = 2x^3 – 2x – 5 Q(x) = –x^3 + x^2 + 1 – x. Tính : a. P(x) +Q(x); b. P(x) − Q(x).

Cho hai đa thức: f(x) = 9 – x^5 + 4x - 2x^3 + x2 – 7x^4 g(x) = x^5 – 9 + 2x^2 + 7x^4 + 2x^3 - 3x a) Sắp xếp các đa thức trên theo luỹ thừa giảm dần của biến b) Tính tổng h(x) = f(x) + g(x). c) Tìm nghiệm của đa thức h(x).

Choose the best answers. 1. She is …………….…. singer I’ve ever met. A. worse B. bad C. the worst D. badly 2. Mary is ………………..…. responsible than Peter. A. more B. the most C. much D. as 3. It is ……………….. in the city than it is in the country. A. noisily B. more noisier C. noisier D. noisy 4. She is …………..….. singer I have known. A. the most beautiful B. the more beautiful C. the most beautifully D. the more beautifully 5. She is ……………….. student in my class. A. most hard-working B. more hard-working C. the most hard-working D. as hard-working 6. The English test was ………………. than I thought it would be. A. the easier B. more easy C. easiest D. easier 7. English is thought to be …………………. than Math. A. harder B. the more hard C. hardest D. the hardest 8. Jupiter is ………………. planet in the solar system. A. the biggest B. the bigger C. bigger D. biggest 9. She runs …………………… in my class. A. the slowest B. the most slow C. the slowly D. the most slowly 10.My house is ……………. hers. A. cheap than B. cheaper C. more cheap than D. cheaper than 11. Her office is …………………. away than mine. A. father B . more far C. farther D. farer 12. Tom is ……………….. than David. A. handsome B. the more handsome C. more handsome D. the most handsome 13. It was …………………. day of the year. A. the colder B. the coldest C. coldest D. colder 14. A boat is ………………. than a plane. A. slower B. slowest C. more slow D. more slower 15. My new sofa is …………………….. than the old one. A. more comfortable B. comfortably C. more comfortabler D. comfortable

Tim a do 548a chia het cho 3va5

Giúp mình với ạ! Join each pair of sentences. Use the words in brackets. 1. Mary came to class late. Her motorbike had a puncture. (because) 2. Nick used to smoke. He seems to be in good heath. (although) 3. Our team won by a large margin. No one thought we would win the championship. (but) 4. I could not see his face clearly. He was standing in the shadow. (so) 5. We couldn’t get tickets. We queued for an hour. (in spite of) 6. The man spoke very slowly. He wanted me to understand what he said. (so that) 7. She earned her living by selling newspaper. She got a B.A. degree. (even though) 8. Our flight was delay. We decided to take a long walk around the terminal. (since) 9. I enjoyed the film. The story was silly. (in spite of) 10. We live in the same street. We hardly ever see each other. (despite) 11. My foot was injured. I managed to walk to the nearest village. (although) 12. They have very little money. They are happy. (in spite of) 13. I got very wet in the rain. I had an umbrella. (even though) 14. I couldn’t sleep. I was tired. (despite) 15. He liked the sweater. He decided not to buy it. (though) 16. I didn’t get the job. I had all the necessary qualifications. (on spite of) 17. I had turn on the air conditioner. It was still hot in the room. (even though) 18. Laura wants to fly. She feels afraid. ( in spite of the fact that) 19. Trevor didn’t notice the sign. It was right in front of him. (even though) 20. I’m no better. I’ve taken the pills. (despite the fact) 21. Matthew doesn’t know any French. It was one of his school subjects. (though) 22. Henry’s friend is a millionaire. He hates spending money. (despite) 23. I’d met her twice before. I didn’t recognize her. (although) 24. Laura felt unwell. She went on working. (in spite of this) 25. I told the absolute truth. No one would believe me. (even though) 26. The good were never delivered. We had received the promise. (despite) 27. We took many pictures although the sky was cloudy. (in spite of) 28. We understand him in spite of his strong accent. (although) 29. Although he is wealthy, he is not spoiled. (despite) 30. Despite a good salary, he was unhappy in his job. (though) 31. In spite of the high prices, my roommates go to the movies every Saturday. (although) 32. Even though she had a poor memory, she told interesting stories to the children. (despite) 33. In spite of their poverty, they are very generous. (although) 34. Though he has been absent frequently, he has managed to pass the test. (despite) 35. In spite of Lee’s Sadness at losing the contest, she managed to smile. (although) 36. My friend ate the chocolate cake even though she was on a diet. (despite ) 37. In spite of headache, he enjoyed the film. (although) 38. My sister will take a plane even though she dislikes flying. (in spite of) 39. He isn’t happy although he is very rich. (despite) 40. Even though he got a good job, he was not satisfied. (despite ) 41. Although he often tells lies, many people believe him. (despite)

cho tập M={0;1;2;...;100}.có bao nhiêu tập con có 2 phần tử từ tập hợp M

Exercise 3: Khoanh tròn đáp án đúng cho mỗi câu sau. 1. Andrew has just started evening classes. He ................. German . A. are learning B. is learning C. am learning D. learning 2. The workers ................................a new house right now. A. are building B. am building C. is building D. build 3. Tom ............................. two poems at the moment? A. are writing B. are writeing C.is writeing D. is writing 4. The chief engineer .................................... all the workers of the plant now. A. is instructing B. are instructing C. instructs D. instruct 5. He .......................... his pictures at the moment. A. isn’t paint B. isn’t painting C. aren’t painting D. don’t painting 6. We ...............................the herbs in the garden at present. A. don’t plant B. doesn’t plant C. isn’t planting D. aren’t planting 7. They ........................ the artificial flowers of silk now? A. are.......... makeing B. are......... making C. is........... making D. is ........... making 8. Your father ...............................your motorbike at the moment. A. is repairing B. are repairing C. don’t repair D. doesn’t repair 9. Look! The man ......................... the children to the cinema. A. is takeing B. are taking C. is taking D. are takeing 10. Listen! The teacher.......................a new lesson to us. A. is explaining B. are explaining C. explain D. explains 11. They ………… …….. tomorrow. A. are coming B. is coming C. coming D. comes Giúp mình với mình sẽ vote 5sao