Cho tam giác ABC cân tại A qua B kẻ đường thẳng vuông góc với AB qua C kẻ đường thẳng vuông góc với AC , chúng cắt nhau tại D Chứng minh rằng tâm giác ABM bằng tấm giác ACM

Moi nguoi giup minh lam bai nay nha

để thực hiện tốt quyền và nghĩa vụ của công dân trong hôn nhân chúng ta cần phải làm gì

Hỗn hợp X gầm metan(CH4) và etan(C2H6) có tỉ khối so với hiddro là 9,4. Đốt cháy 1 mol X cần V lít (đktc). Tính V

để thực hiện tốt quyền và nghĩa vụ trong hôn nhân chúng ta cần phải làm gì

Cho đoạn thẳng AB dài 2^2021 cm . Gọi C1 là trung điểm đoạn thẳng AB, C2 là trung điểm AC1, . . . , C2020 là trung điểm đoạn thẳng AC2019. Tính độ dài đoạn thẳng C1C2020.

12. I went to the cinema .......... feeling tired. A. However B. Although C. Despite D. In spite 13. Lan often played football when I was a student. A. Lan used to play football when I was a student. B. Lan used to played football when I was a student. C. Lan used to plays football when I was a student. D. I am playing football when I was a student. 14. The new film has good audience figures .poor review in the press. A. because of B. In spite of C. although 15. OPEN DAILY (except Monday) A. You can come here all days. B. You can shop here 6 days a week. C. You can come here on Monday 16. NO BALL GAMESON GRASS A. You can't play football here. B. Playing football is allowed here. C. You can play ball game. D. You should use ball here. 17. I really like the .......... of this actor. It's wonderful A. perform B. performer C. performance D. performed 18. .......... is your birthday? - In August. A. Where B. Why C. When D. What time 19. ROAD CLOSED A. You mustn't stop here. B. You should walk on this road. C. You cannot drive on this road now 20. The film was so boring watched it from beginning to end. A. Therefore B. However C. Although D. Despite 22. Let's go to the cinema this week? A. good idea B. Yes, please C. I want 23. What do the .......... say about the film? A. critics B. actors C. director 24. They were very .......... with her acting A. disappointing B. disappointed C. disappoint 25. The distance from my house to supermarket is about 300 meters. A. This is about 300 meters from my house to supermarket B. It's about 300 meters from my house to supermarket C. It's distance 300 meters from my house to supermarket. D. It distances about 300 meters from my house to supermarket 26. Cyclists must ......... for the pedestrians when they are cycling along the country lane. A. look out B. see off C. avoid

Câu 1:Tìm x: a)2009−|x−2009|=x b)(2x−1)2008+(y−25)2008+|x+y−z|=0 Câu 2: Tìm 3 số a;b;c biết: 3a−2b/5=2c−5a/3=5b−3c/2 và a + b + c = -50

Một khung dây hình chữ nhật ABCD gồm 300 vòng dây, AB=8cm,AD=6cm.Khung được dặt trong từ trường đều B=4.10^-3T , đường sức từ vuông góc với mặt phẳng khung . Quay khung dây 30 quanh cạnh AB. Độ biến thiên từ thông qua khung dây có độ lớn bao nhiêu

1. Hi, Peter. You are tired. A. Yes, I am really exhausted B. Yes, I'm excited C. Yes, I am good D. Thanks, you are welcome 3.How about going to the cinema? A Good ideal B. Yes, please C. I' m busy D. Don't mentiont it 4. Although they were tired, they wanted to watch the film. A. Despite the fact that being tired, they wanted to watch the film. B. In spite of being tired, they wanted to watch the film. C. In spite of they tiredness, they wanted to watch the film. 5. Computer room - No food or drinks A. You can eat or drink here. B. You mustn't eat or drink C. You should bring food D. Eating food is good 6. Many people say Titanic is very romantic.I don't like it. A.However B.In spite of C.Despite D.Although 7. Lan used to .......... morning exercisewhen she got up early. A. did B. does C. do D. does 8. I am sure that they will find the film. A. exciting B. excited C. excite D. excites 9. She thinks that film interesting. A. She was interesting in that film. B. She is interested in that film C. She finds that film interested. D. She felt interesting abqut that film. 10. He...siming in the river when he was young. A. used to go B. didn't used to go C. wasn't used to going 11. I lived in the countryside when I was young. A.. I use to live irfthe countryside when I was young. B. I used to live in the countryside when I was young. C. I use to lived in the countryside when I was young.