Lớp 3A có tất cả 13 hàng,mỗi hàng có 3 bạn.số bạn gái ít hơn số bạn trai là 4 bạn.hỏi lop 3A co bao nhiêu bạn trai,bao nhiêu bạn gái

Câu 6 2 vs 5 nhỏ Giúp mình vs ạ

cho tam giác abc cân tai a . vẽ bm,cn lan luot la pg của góc b và góc c . cm bm=cn

Nêu suy nghĩ của em về bác hồ vị lãnh tụ vĩ đại của nhân dân , anh hùng giải phóng dân tộc , danh nhân văn hóa thế giới

1 người đi xe máy từ a đến b cách nhau 370km rồi trở về b ngay với vận tốc ban đầu nhưng đi được 2 giờ nghỉ 45 phút tại C muốn về kịp giờ phải tăng vận tốc len 25km/h. Tính vận tốc lúc đi

Chuyển sang câu bị động 1. They take good care of books. 2. Has Nam finished his homework? 3. Where did you keep your money? 4. Who do you send these Christmas cards? 5. Might they have held the meeting? 6. Do the shop assistants hand the boxes to the customers?

Giải phương trình: $\sqrt[4]{1-x}$ +$\sqrt[4]{2-x}$ =$\sqrt[4]{3-2x}$

IX/ Rewrite sentences, using IF 1. Study hard and you will pass this year's exam.  ............ ................................................................................................................................................................. 2. The weather isn’t fine so we don’t go on a picnic.  ............ ................................................................................................................................................................. 3. The weather wasn’t fine so we didn’t go on a picnic.  ............ ................................................................................................................................................................. 4. The weather wasn’t fine so we stay home.  ............ ................................................................................................................................................................. 5. I don’t go to Paris, I can’t visit the Eiffel Tower.  ............ ................................................................................................................................................................. 6. I do not go because they don't invite me.  ............ ................................................................................................................................................................. 7. I don’t study hard so I often get bad result.  ............ ................................................................................................................................................................. 8. I didn’t study hard so I get bad result.  ............ ................................................................................................................................................................. 9. I didn’t go to Paris, I couldn’t visit the Eiffel Tower.  ............ ................................................................................................................................................................. 10. I did not go because they didn't invite me.  ............ ................................................................................................................................................................. 11. He sends the information we need because he gets my email.  ............ ................................................................................................................................................................. 12. He sent the information we need because he got my email.  ............ ................................................................................................................................................................. 13. He sends the information we need because he got my email.  ............ .................................................................................................................................................................

6) (-2)x + 167 = 89 7) (- 2) . x - 46 = 68 8)3|x+4|=27 9) x + 140 = 74 10) 3x + 140 = 74 11) (- 3) . x - 58 = 32 12)4 |x+3|=28 13) x + 150 = 94

VIII/ Change these active sentences to passive. cái gì được làm (bằng dụng cụ gì), ở đâu, bởi ai, khi nào. 1. Mai’s grandfather is building a house now.  .............................................................................................................................................................................. 2. They were planning a new road near my house.  .............................................................................................................................................................................. 3. The man had cleaned the walls.  .............................................................................................................................................................................. 4. John is going to tell you the news when you arrive home.  .............................................................................................................................................................................. 5. I will have to clean all the windows after the storm.  .............................................................................................................................................................................. 6. I will have cleaned all the windows.  .............................................................................................................................................................................. 7. The army completed that project.  .............................................................................................................................................................................. 8. They take good care of books.  .............................................................................................................................................................................. 9. Do the shop assistants hand the boxes to the customers?  .............................................................................................................................................................................. 10. Does the committee appoint Alice as secretary for the meeting?  .............................................................................................................................................................................. 11. Did Mary give Tom a lot of money?  .............................................................................................................................................................................. 12. Was someone painting her house at 7p.m yesterday?  .............................................................................................................................................................................. 13. Is he buying a lot of books from bookstores?  .............................................................................................................................................................................. 14. Might they have held the meeting?  .............................................................................................................................................................................. 15. Will the army have to finish that project?  .............................................................................................................................................................................. 16. Must they have taken good care of books?  .............................................................................................................................................................................. 17. Has Nam finished his homework?  .............................................................................................................................................................................. 18. Where did you keep your money?  .............................................................................................................................................................................. 19. Who do you send these Christmas cards?  ..............................................................................................................................................................................