Xin hãy giúp mình gấp, cảm ơn trước

Tìm stn n biết n+2 là ước của 2n+14

Bài 6.Cho tam giác ABC vuông tại A có AB < AC. Kẻ AH vuông góc với BC (H thuộc BC). Lấy điểm D trên AC sao cho AD = AB. Kẻ DE và DK lần lượt vuông góc với BC và AH (E thuộc BC, K thuộc AH)a) So sánh độ dài BH và AKb) Tính số đo góc HAE

Giải giúp phần I Xin cảm ơn rất mông được câu trả lời

Cho R1=12ôm,R2=18ôm mắc song song vào hai điểm A và B,một ampe kế đo cường độ dòng điện trong mạch chính, ampe kế 1 và ampe kế 2 đo cường độ dòng điện qua R1 và R2 a. Hãy vẽ sơ đồ mạch điện. b. Ampe kế 1 và ampe kế 2 chỉ giá trị là bao nhiêu (theo hai cách) biết ampe kế chỉ 0,9A. c. Tính hiệu điện thế giữa hai đầu A và B. Rất mong được các bạn giúp đỡ ạ!!!

Hoà tan 13g Zn bằng một lượng vừa đủ dung dịch HCL , sau phản ứng thu được muối và khí H2 a) Viết phương trình hoá học xảy ra b) tính thể tích khí H2 thu được ở điều kiện tiêu chuẩn c)Tính khối lượng muối thu được

phương trình (m^2-3m+2)x^2 -2m^2x-5=0 có 2 nghiệm trái dấu

Viết bài văn tìm những nét tương đồng trong cảm xúc của nhà thơ Huy Cận trong Tựu trường và nhà văn Thanh Tịnh trong Tôi đi học

A. PHẦN TRẮC NGHIỆM (40 câu: 8,0 điểm) Choose the word A, B, C or D whose underlined part is pronounced differently from the others. 1. A. reply B. many C. candy D. lovely 2. A. started B. landed C. kicked D. painted 3. A. break B. mean C. deal D. stream Choose the word A, B, C or D which is stressed differently from the others. 4. A. publication B. competition C. infection D. contribution 5. A. hobby B. reduce C. prison D. quarter Choose the word A, B, C or D which best completes each of the sentences from 6 to 25. 6. When he________ here, Mark was always making mistakes. A. works B. worked C. was working D. had worked 7. A great deal of tea________ everyday in England. A. drinks B. is drunk C. drink D. are drunk 8. Nam’s father, ________ is 78 years old, goes swimming everyday. A. that B. who C. whose D. whom 9. It was________ a boring film that I left before the end. A. so B. too C. very D. such 10. If we work hard, we will make this beach a clean and________ place again. A. beauty B. beautifully C. beautiful D. beautician 11. The new teacher loves poems and________ them by heart. A. makes us to learn B. makes us learn C. make us to learn D. make us learn 12. You shouldn’t stay at home so much. Go________ and make new friends. A. out B. away C. on D. by 13. Unless he________ hard, he________ the final exam. A. studies/ won’t pass B. studies/ will pass C. doesn’t study/ will pass D. doesn’t study/ won’t pass 14. Mathematics is a________ subject in school. A. easy B. compulsory C. unimportant D. choice 15. I don’t want much sugar in my coffee. Just________, please! A. a few B. little C. few D. a little 16. My father used________ heavily, but he doesn’t smoke any longer. A. to smoke B. to smoking C. smoke D. smoking 17. Jane: “________ do you go to the library?” Jack: “Twice a week.” A. How long B. How far C. How often D. How much 18. ________ it was so windy and cold, she went out without a coat. A. However B. Despite C. In spite of D. Although 19. ________ weather is often cool in Sapa, Vietnam. A. A B. The C. Some D. An 20. I like wearing jeans because jeans have never been out _________ fashion. A. at B. on C. of D. by 21. It is sunny today. Let’s play tennis, ________? A. won’t we B. shall we C. will we D. shan’t we 22. Peter: “Would you like to drink more coffee?” Daisy: “________.” A. Yes, I like it B. Yes, I’d love to C. Yes, I like you D. No, I don’t like 23. I am always busy. I wish I________ more time to look after my family. A. am having B. have C. had D. was having 24. I look forward to________ from you. A. to hearing B. hear C. hearing D. to hear 25. Everyone in this school has to wear a uniform and so________. A. you do B. are you C. you are D. do you Read the following passage then choose the word A, B, C or D to fill in each of the blanks from 26 to 35. POSTCARDS Today, people like to send postcards (26)________ their friends and family. These postcards often have pictures of beaches, mountains or castles on them and you (27)________ write a message on the (28)________. Many people send postcards (29)________ they are on holiday because postcards are cheap and the pictures on them are often (30)________ than people’s own photos. Somebody sent the first postcard (31)________ the end of the nineteenth (32)________. It had a picture of a town by the sea on it. Later on, postcards had pictures showing something in the news that week, perhaps an accident (33)________ an important person’s visit. People liked to (34)________ them because they did (35)________ have pictures in their newspapers then. 26. A. to B. by C. from D. about 27. A. can B. shall C. do D. have 28. A. front B. middle C. top D. back 29. A. until B. when C. during D. before 30. A. best B. good C. better D. well 31. A. at B. in C. on D. from 32. A. month B. year C. decade D. century 33. A. also B. too C. or D. but 34. A. see B. meet C. observe D. look 35. A. never B. not C. no D. unlikely