Bài 1 a)cho tam giác abc ,m là trung điểm của BC ,D trên AC sao cho CD=2AD.AM cắt BD tại i.CM:I là trung điểm AM b)cho tam giác ABC có trung tuyến AM. Gọi E là trung điểm BI cắt ACtại D. CM:AD=1/2DC Bài 2 Cho tam giác ABC có trung tuyến BD vad CE.Gọi M và N lần lượt là trung điểm của BE và CD.MN cắt BD và CE thứ tự tại I và K a)Tính độ dài MN ok la làm đc gì thì làm nhưng cả 2 bài nha vote 5 sao yêu thích cố lên :)))

Trong chiến dịch điện biên phủ Liên Xô và Trung Quốc hộ trợ ta về những? giúp mik v

Vẽ đậu mầm cute ............................

Help me mọi người !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Một người đi từ A đến B hết 2 giờ 30 phút. Trong nửa thời gian đầu người đó bằng xe đạp với vận tốc 13km/giờ, trong nửa thời gian sau người đó đi bằng ô tô với vận tốc gấp 4 lần vận tốc đi bằng xe đạp. Tính độ dài quãng đường AB.

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions. 31. The new harvest machine works most effectively than the old one. A B C D 32. I think my workshop is twice as larger as his. A B C D 33. The more he works, the more rich he becomes. A B C D 34. Of the four dresses, I like the red one better. A B C D 35. My friends arrived more early than I expected. A B C D 36. He doesn’t have as a lot of friends as he used to. A B C D 37. I prefer to watch TV rather than to listen to music. A B C D 38. Harvey is the smartest of the two boys here. A B C D 39. The new models are not only less expensive but also the more efficient. A B C D 40. Minh can play table tennis much better than I. A B C D 41. The more he tries to remove the strain from her shirt, the worst it looks. A B C D 42. Don’t you think this is most boring film you have ever seen? A B C D 43. There are less students present today than there were yesterday. A B C D 44. All the athletes are trying to run as fastly as they can. A B C D 45. One of the uniquer parks in the United States is the Petrified Forest National Park of Arizona. A B C D 46. They treat women more equally as people in the North. A B C D 47. My sister dances weller than me. A B C D 48. Lan sings sweetlier than Hoa does.   A B C D 49. In my thought, there is no most kind-hearted person in the world than my mother. A B C D 50. The moment she felt the most happily is when he declared his love to her. A B C D 51. Because I had fewer work experience than she had, they didn’t choose me. A B C D 52. The highest the sun rises, the warmer the weather is. A B C D 53. The more difficult the test is, the most nervous the students are. A B C D 54. When I saw him in the park, he was striking his son in the face. It was said that he became more and A B more violently. C D 55. The less trees we plant, the cleaner the air is. Therefore, we should create a green house together. A B C D 56. Black and white movies are not more interesting as the color movies. A B C D 57. This exercise is the same from the last two exercises.  A B C D 58. My shoes are similar as yours in color. A B C D 59. My new glasses cost me twice as more as the last pair that I bought. A B C D 60. John did not run as more quickly as Bill.   A B C D làm hộ mình nha

1. was/ bored/ in/ so/ I/ that/ lesson. 2. The/ that/ boring/ I/ so/ almost/ fell/ was/ film/ asleep. 3. I/ sleep/ noise/ is/ can't/ really/ that/ because/ annoying. 4. She/ at/ playing/ neighbor/ annoyed/ loud/ because/ music/ feels/ her/ keeps/ night. 5. That's/ surprising/ really/ a/ number. 6. I'm/ she/ the/ surprised/ didn’t/ pass/ that/ exam. 7. I/ an/ am/ interesting/ watching/ movie. 8. I/ about/ always/ in/ am/ talking/ interested/ movies. 9. That/ dog/ big/ me/ feel/ makes/ frightened. 10. We/ forget/ would/ frightening/ that/ never/ experience.

x^2 -2mx+2m-1=0 sao cho pt có 2no x1,x2 thỏa mãn |x1-x2|=4 nhanh dùm mình nhá

1 chiếc thùng bằng tôn hình trụ có R=10cm h=32cm a, tính diện tích tôn để làm thùng (ko kể diện tích các chỗ ghép và thùng ko có nắp ) b, hỏi nếu đổ 10l nước vào thùng thì nc có bị tràn ra ngoài ko

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