Cho (O) đường kính AB và I là trung điểm OA. Vẽ dây CD bất kỳ đi qua I và dây BE vuông góc với CD. Gọi M là trung điểm của CD, AM cắt BE tại K. a. Chứng minh: tứ giác ADKC là hình bình hành. b. Chứng minh: K là trung điểm BE. c. Gọi giao điểm của BE và CD là H. chứng minh 4 điểm O, K, H, M cùng nằm trên một đường tròn. Xác định tâm và bán kính của đường tròn đó. Giúp hình với câừ a ạ

Câu 1,3 ạ Em đang cần rất gấp ạ

III. Complete the sentences with suitable phrasal verbs from the box. turn up ,pull down, turn back, take off ,get over take off, grow up ,give up, set up, look forward to 1. You need to _____________ your shoes before going inside the house. 2. Tom is not very punctual. He usually _____________ten minutes after the lesson has started. 3. They _____________ the old cinema tobuild a new shopping mall. 4. I am really _____________ my holiday to NhaTrang. 5. The police never _____________ all hope of finding the lost child. 6. A committee has been _____________ to organize social events for the students. 7. It took me a few days to _____________ my flu. . 8. Please _____________ your shoes when you come in the house. 9. The mountain climbers have to _____________ because they were exhausted. 10. I was born in Hai Duong, but I _____________ Ha Noi.

Ai giải hộ bài 10.11.12 với ạ . Ai trả lời đúng và hay mình cho câu trả lời hay nhất và đánh giá 5sao

Giải hộ em voiw em vote 5 stars cho qk

2. “Where has he been?” She doesn’t know that She doesn’t know :

Tìm giá trị nhỏ nhất của biểu thức A = -2.x^2 - 10.y^2 + 4.x.y + 4.x + 4.y + 2016

3 xe ô tô chở được tất cả 3 tấn gạo 56 kg xe 1 là 25% tổng số gạo xe 2 chở 2/3 xe ba hỏi xe 3 chở được bao nhiêu

II. Choose the best option (A, B, C or D) to complete the sentence or replace the underlined word. 1. Mary was very unhappy last week, but she has _____________ now. A. cheered up B. made out C. believed in D. came up 2. Dubai's Palm Islands in the blue ocean is the _____________ of a good and sunny light. A. indicator B. view C. signal D. sign 3. This place is so _____________ with the non-stop flow of customers to come and enjoy Pho. A. delicious B. convenient C. popular D. exciting 4. You don’t need to _____________ to go the mail - jeans and a T-shirt are fine. A. dress in B. go over C. dress up D. turn up 5. Ha Noi also offers a nightlife as exciting as_____________ in Ho Chi Minh City. A. it B. which C. what D. that 6. Let me know when you come to Hoi An and 1I’ll _____________. A. take you out B. bring you around C. show you around D. cheer you up 7. We expected her at nine but she finally _____________ at eleven. A. tuned up B. tuned out C. came over D. grew up 8. Linda is taking extra lessons _____________ to what she missed while she was sick. A. take back B. keep up with C. get on well with D. look forward to 9. Visitors can take a free boat from Manhattan to Staten Island for a great _____________ of the Statue of Liberty and the Manhattan skyline. A. view B. sight C. scene D. landscape 10. He’s still hoping something will _____________. A. turn out B. turn up C. come over D. grow up 11. Professor Colin Evers _____________, a job at a famous university in Sydney. A. applied for B. found out C. made up D. stand up 12. We really can't, _____________ living like this- we'll have to find a bigger house. A. go out B. go over C. go up D. go on 13. When you want to relax, you'll have one of the world's _____________ cities at your feet, with more than 40% green space and open water to enjoy. A. greener B. greenest C. mostly green D. green mostly 14. It is considered that life in the city is wonderful and _____________. 3 A. funny B. boring C. enjoyable D. helpful 15. Opened in 1937, the Golden Gate Bridge in San Francisco still ranks among the top 10 _____________ bridge spans in the world. A. long B. longer C. mostly long D. longest

Fill in each gap with suitable relative pronoun : which , that , whose , whom or who : 1. Stop him . He’s the man _____________ stole my wallet . 2. There are many people ____________ are living in very poor condition . 3. I’ve ever read the book _____________ Huong gave me yesterday . 4. The man ___________ I saw last weekend said something totally different. 5. They have invented a television set ____________ is small as a watch . 6. This is the building ____________ was destroyed badly in the fire last night . 7. I’m talking about Tom, ____________ is really friendly. 8. The boy ____________ sister is in my class can speak Japanese and Korean languages . 9. The dictionary ______________ is on the table belongs to Long . 10. He wore a hat _____________ made him look like a cowboy . 11. The gentleman ____________ gave him the picture was his old teacher . 12. Mr David , _____________ comes from England , has never been to Vietnam . 13. Mr David , _____________son studies with us , has never been to Vietnam . 14. A bricklayer is a person ____________ builds houses . 15. Peter couldn’t come to the party last night , ___________ was really a pity . 16. We visited children _____________ parents are dead . 17. Do you have a good relationship with the person ____________ lives next door to you . 18. The student ____________ did this exercise might be very intelligent. 19. I’ll catch the train ____________ leaves at 10 a.m . 20. Ly Duc ,____________ won 2 gold medal at the Games , comes from Vietnam. 21. He can’t swim , ____________ makes me surprised. 22. We are visiting Ha Long , ____________ is in the north of Viet Nam . 23. I’m staying with the boy ____________ brother looks very handsome. 24. He talked about the books and writers _____________ made us bored . 25. This is the photo _____________ was taken yesterday . 26. Henry , ___________ you’ll met tomorrow , is also a member of the board . 27. Can you answer the questions ____________ I ask you ? 28. The lady ___________ son went on a picnic with us last weekend is a teacher at our school . 29. The woman ____________ book I borrowed is very generous . 30. He is the only friend ___________ I like .