e cảm ơnn
Cho a và b là số nguyên dương thỏa mãn a +b= 50, tìm giá trị nhỏ nhất của M= (1/a)+(2/b)
Cho hai số thực a,b khác 0 thoả mãn : 2a^2 + b^2/4 + 1/a^2 = 4 . Tìm GTLN của biểu thức S = ab + 2023
bác ba xây một cái giếng miệng giếng hình tròn có đường kính de bằng 1,6m xung quanh miệng giếng xây thành giếng ef = 18 cm tính diện tích thành giếng
1 giờ trước (10:50)
Ô tô thứ nhất đi từ tỉnh A đến tỉnh B với 40km/h .1 giờ sau ô tô thứ 2 đi từ B đến A với 65km/h .Hai ô tô gặp nhau khi ô tô thứ nhất đi được 2/5 quãng đường AB .Tính quãng đường AB?
Cho pt x^2-4x-1=0 có 2 nghiệm x1,x2. Không giải pt hãy tính giá trị biểu thức P=(2x1+1)(x2^2+1) Đây là bài vi ét ạ x1,x2 (1,2 là chỉ số dưới chân chữ x )
1. “You can sit here”. The steward 2. “I’m taking my driving test tomorrow” She 3. “Jim may arrive late today” She 4. “I’ve only had this new computer since yesterday” Johny 5. “I don’t want anything to eat now” He 6. “I posted the card yesterday”. Joanna 7. “You must do your homework every day”. Jane 8. “You should go to the library more often”. Tom 9. “There isn’t any milk in this bottle, Ann”. Mike 10. “John left here an hour ago”. She 11. “The twins can’t go to school today because...
Đọc tiếp
1. “You can sit here”. The steward 2. “I’m taking my driving test tomorrow” She 3. “Jim may arrive late today” She 4. “I’ve only had this new computer since yesterday” Johny 5. “I don’t want anything to eat now” He 6. “I posted the card yesterday”. Joanna 7. “You must do your homework every day”. Jane 8. “You should go to the library more often”. Tom 9. “There isn’t any milk in this bottle, Ann”. Mike 10. “John left here an hour ago”. She 11. “The twins can’t go to school today because they’re ill.” Chris 12. “I grow these carrots myself” He 13. “I won’t be home this evening because I have to work late” Peter 14. “I don’t know where Archie is today”. Victoria 15. Nam said to us “I am very happy to see you here”. Nam 16. “What’s your name ?” She 17. “What color are you going to paint the living room?” she asked them. She 18. “How many languages can you speak ?” I asked her 19. “Why do you want to take this course?” She 20. The doctor asked me, “How do you feel now ?” 21. “Where do you live, the boy ?”, asked the man. 22. She asked me, “Why do you have to do this work ?” 23. She asked me : “How old are you ?” 24. He asked Lan, “How far is it from your house to the school ?” 25. “Who puts the salt in my cup of coffee ?”, asked Peter. 26. “Can you speak any other languages ?” She asked 27. “Do you have any French friends ?” She asked 28. He asked me, “Are you free on next Sunday ?” 29. The tourist asked me, “Is there a post office near here ?” 30. “Can you play the piano ?”, he asked the girl. 31. I asked him, “Will you take part in the program with me ?” 32. My teacher asked me “Have you ever heard about UFOs ?” 33. She asked me “Do you like playing games on the Internet ?” 34. They asked him, “Do you like to play this game ?” 35. “Are you a student ?” She asked 36. The teacher said to us : “Copy these exercises in your notebooks” 37. My mother asked me, “Don’t spend much time on playing games” 38. The old woman said to the boy, “Can you help me ?” 39. Mrs Tuyet said to her son, “Give the book to me, please” 40. Maryam said to Lan, “Would you like to come and visit me next summer?” 41. His mother said to him : “Don’t forget to turn off the faucet after using”. 42. Mr Lam asked his secretary, “ Can you choose a suitable language school for me ?” 43. He said to me, “Do this test again, please” 44. The teacher said to them, “Don’t make noise in class” 45. “Can you open your bag, please ?”, the custom officer said to me. 46. Mary said to me, “Can I borrow you some money ? I want to buy this shirt.”
Câu 2. Cho biết quy trình nuôi thủy sản của Việt Nam?
Đọc tiếp
Câu 2. Cho biết quy trình nuôi thủy sản của Việt Nam?