cho tam giác ABC cân tại A có 2 đường trung tuyến BM và CN cắt nhau tại G a)cm: AG là đường trung trực của MN b) giả sử E là trung điểm của BC.cm: A,G,E thẳng hàng c)cho AB=AC=13cm,BC=10cm.tính AG d)cm:MN//BC e)cm:BC< 4BG g)so sánh chu vi của tam giác ABC vơi AE+3BG

tại sao quả bóng bàn bị bẹp khi bỏ vào nước nóng lại có thể phồng lên ko chép trên mạng và chi tiết nha cảm ơn

tấm vải đỏ lúc đầu dài 40m, người ta bán lần thứ nhất 20% tấm vải , lần hai 5/8 số vải còn lại a) tính số mét vải còn lại sau hai lần bán ,số mét vải còn lại đó chiếm bao nhiêu phần trăm tấm vải đỏ lúc đầu b) tấm vải xanh cắt đi 12m thì phần còn lại của tấm vải đỏ bằng 3/7 tấm vải xanh .So sánh chiều dài tấm vải xanh khi chưa cắt với chiều dài tấm vải xanh khi chưa cắt với chiều dài tấm vải đỏ lúc chiều

Giúp mình vs ạ Càng nhanh càng tốt Câu 3 ạ

Vẽ chibi/đậu mầm cầm quả dâu tây nha Có ai hc online như tui khum 😔😶😶😶😶 Hơi chán cô out ra liền là lớp như cái chợ

1 trong 2 nhá mọi ng ơiiiiiiiiiii Cứu e với :((((

một xe máy đi từ a đến b với vận tốc 40km/h khi quay trở về người đó đi với vận tốc 60km/h.vì vậy thời gian về ít hơn thời gian đi là 30 p .tính quãng đường ab Tại sao suy ra t1 - t2=1/2 hay S/40 - S/60 = 1/2 suy ra S=60 (km) vậy AB dài 60km Mình không hiểu

9. I started learning English three years ago. ÊI have………………………………..…..……………………… 10. Could you give me that book? ÊWould you mind………………………………..…..……………………… 11. Sue is the most intelligent in her class. ÊNo one………………………………..… 12. “Can you close the door for me?” Mai said to Minh. ÊMai asked Minh.....………………………………..… 13. No one has used this room for years. Ê This room.........………………………..…..… 14. This question is difficult to understand. ÊIt’s.........………………………………..… 15. Many people in the world speak English. ÊEnglish……………………………………

Giúp mình với mình cần gấp Cảm ơn mn Mình sẽ đáng giá 5 sao nhé cho người nhanh nhất

Circle the word whose underlined part is pronounced differently from the others 1. A. health B. meat C. read D. teach 2. A. cucumber B. sugar C. durian D. music 3. A. add B. amount C. championship D. paddle 4. A. virus B. disease C. like D. mine II. Match the questions in column A with suitable answers in column B A B 5. Would you like to come to my party? 6. What did you see on your trip to Nha Trang? 7. What’s your height? 8. What do you like doing in your free time? A. So does my sister. B. I’d love to. What time? C. I like playing chess. D. one meter 45 centimeters. E. I saw many different types of fish. III. Choose A, B, C or D to complete the following sentences 9. My brother doesn’t like pork and ------------------ A. either do I B. neither do I C. neither I do D. I don’t too 10. I don’t like coffee.Namdoesn’t like it ------------ A. so B. too C. either D. neither. 11. He ------------ to the zoo last Sunday. A. went B. goes C. go D. to go 12. My father is a ------------- football player. A. skill B. skillful C. skillfully D. skills 13. The students of Class 7A have three _______ a day. A. 15-minute break B. 15-minutes break C. 15-minutes breaks D. 15-minute breaks 14. There are ----------- art galleries in this city. A. a number of B. a great deal C. a many D. lots 15. What kinds of ------------- do you like? - I like cartoons. A. films B. books C. pictures D. magazines 16. You should ----------- your hands before meals. A. wash B. washed C. washes D. to wash IV. Choose words in the box to complete the dialogue Doctor headache better did Hoa: What was wrong with you last night? Lan: I had a (17) ------------- Hoa: Did you go to see a (18) --------------- Lan: Yes, I (19) ----------. Now I feel (20)------------- V/ Read the text carefully and answer the questions In summer holidays, Mr. Hung, Mrs. Chi and their children, Tuan and Hoa often go to the beach for two or three days. They always go to Vung Tau in the south ofViet Nam. They usually stay in a small house or a flat by the sea, but sometimes they stay in a hotel. Last summer, they went to Nha Trang. They stayed at Sunshine hotel for three days. In the morning, Tuan played football with his father on the beach. Hoa and her mother walked along the beach and built sandcastles. They visited Tri Nguyen Aquarium and saw different kinds of fish there. They also bought a lot of souvenirs for friends. A. True(T)/ False(F) sentences 21. Mr. Hung, Mrs. Chi and their children often go to the beach for their summer holidays. 22. They often go there for four days. 23. They usually stay in a hotel. 24. They saw different kinds of fish. B. Answer the questions 25. Where did they go last summer? 26. What did Hoa and her mother do there in the morning? 27. What did they see at Tri Nguyen Aquarium? 28. Did they buy a lots of souvenirs for friends? VI. Choose the words or phrases that are not correct in standard English 29. I didn’twroteanypostcards 30. He is hungry, so he have to find something to eat VII. Rearrange the words to make meaningful sentences 31. you/ get/ up/ did/ early/ ? /. ..................................................................................................... 32. nice/ a/ neighbor/ what/ !/. ..................................................................................................... VIII. Make the questions for the underlined words 33. My sister hates durians. ..................................................................................................... 34. They went to Ha Noi by train. .....................................................................................................