Cho tam giác ABC có góc C<90 độ, M di động trên AB, N, P là hình chiếu của M xuống BC, AC. CMR: a) Góc ACB= góc BMP + góc AMN b) Xác định I thuộc miền trong tứ giác MNCP để IM=IN=IC=IP c) Tìm vị trí của M để PN min Mọi người giúp mình với, 1 câu thôi cũng được, mai mình kiểm tra rồi T.T Cảm ơn mọi người nhiều!

tính giá trị biểu thức a, x^2+ 4x+4 tại x=98 b, x^3+3x^2+3x+1 tại x=99 giúp mình vs mn ạ

Trên bản đồ khoảng cách giữa hai điểm A và B là 15cm. Khoảng cách giữa hai điểm ấy trên thực tế là 60km. Tính tỉ lệ xích của bản đồ?

VI. There is a mistake in the underlined parts of each sentence. Identify your answer by circling the corresponding letter A, B, C or D and then correct it. (10 points) 1. That math problem is too difficult for him and his friends to solve it. 2. I read something about Taranrino's new film on that magazine. 3. It is advisable that one should have one's teeth checked regular. 4. Norman doesn't know everything but he talks as if he knows everything. 5. Building thousands of years ago, the ancient palace is popular with modern tourists. VII. Give the correct tenses of the verbs in brackets (10 points) 1. My little sister (read) _______________ Sleeping Beauty several times. 2. I saw Maggie at the party. She (wear) ______________ a very beautiful dress. 3. I was made (answer) _____________all the questions by the teacher. 4. Look at the policeman over there. You (stop) _______________if you try to cross the road now. 5. Were I (improve) _______________my English speaking skill, I would easily get that job. VIII. Fill in each blank with the correct form of the given word. (10 points) 1. He doesn‘t agree with the _________ that there is life on other planets. believe 2. You must keep on working with him no matter how much you ________. agree 3. I try not to remember this ________ experience that only leaves me with unhappy thoughts. fright 4. The boy __________ asked for permission to go out with his friends. repeat 5. The thief found the door__________and broke into the house. lock SECTION 5. WRITING XII. Finish the second sentence so that it has the same meaning as the first one. (10 points) 1. I won't be able to go on holiday if my parents don't give me the money. Unless......................................................................................................................................... 2. “I can’t go to the movies with you tomorrow” Mary said to John....................................................................................................................... 3. She has only recently started wearing glasses. She didn’t…………….…………………………………………………………………………… 4. Without your help, I wouldn't have been able to find my way. Had ............................................................................................................................................... 5. I am sure that someone has been following me. Someone ………………………………………………………………………………………… XIII. Finish the second sentence so that it has the same meaning as the first one, using the given word. Do not change the given word. (10 points) 1. Immediately after his arrival, things went wrong No……………………………………………………………………. went wrong (sooner ) 2. On business trips, I prefer driving home to staying in a hotel overnight On business trips, I’d …………………….……………..…….. in a hotel overnight (prefer) 3. My views on this subject are exactly the same as yours. There ………………………………………….. my views on this subject and yours. (difference ) 4. It is thought that the accident was caused by human error The accident ……………………………..………………….. by human error (been ) 5. The romantic novel was very interesting and I read it twice. It was…………………………………………….……………………….… it twice. (so) XIV. Complete the letter of enquiry by using the words or phrases below, adding more words if necessary. (20 points) Dear Mr. Smith, 1. A friend/ mine/ recently/ return/ England / advise/ me / write/ you. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 2. I/ hope/ come/ England/ next year/ spend/ some months/ Cambridge. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 3. Perhaps/ you/ recommend/ suitable /English family/ me/ stay ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 4. I/ want/ have/ more time/ practise/ speak/ English/ native speakers. ……………………………………………………………………………………………………… 5. While/ I/ there / I/ like/ take / part-time/ course/ improve/ English. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 6. There/ be/ part-time/ course/ your college? ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 7. If/ be/ I / grateful/ you/ send/ application form. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 8. Please/ tell / much/ fees/ course/ be. ……………………………………………………………………………………………………… 9. I / like / know/ what/ date/ course/ begin. ……………………………………………………………………………………………………… 10. I/ look forward/ hear/ you/ soon ……………………………………………………………………………………………………… Yours sincerly

18. What's Tom's address? → Where cloe Tom hve ... 19. The party will start at 5 p.m. and finish at 9 p.m. → The party will last 4 hour ..... 20. How much do these dresses cost? the puce o1 there a desses → What 21. How much is a cup of coffee? → How much 22. How far is it from your house to the market? → What 23. There are forty students in my class. → My 24. Where were you born? → Where's 25. This tree is taller than that one. → That tree → That tree 26. Where does she live? → What 27. What's the distance between HCM City and Da Lat? → How 28. I am going to visit Pearl Harbor next week. 29. Be on time! → Don't 30. Ilow old are you? → What

vẽ tranh chì anime buồn khóc 3 bức khác nhé

sao từ nãy đến h mik đi đâu cg thấy có ai đó bc bình luận của mn thế nhỉ Vẽ anime tức giận nha

Cho 6 gam axit axetic tác dụng với 9,2 gam ancol etylic (xúc tác h2so4 đặc đun nóng) sau pứ thu được 4,4 gam este.Hiệu suất cũa pứ este hóa là?

Hãy nêu thời gian tình hình chubg của các vương quốc ( Các quốc gia phong kiến Đông Nam Á)

$\frac{5-3√5}{√5-3}$- $\frac{8}{√5-1}$+ $\frac{1- √5}{ √5}$