tính A=36/1.3.5+36/3.5.7+......+36/25.27.29 giải thik chi tiết từng bước giải xong mik vote 5 sao cảm ơn nhiều ạ

Task 1: Choose the word whose underlined part is pronounced differently from the others. 1. A. mash B. scatter C. mater D. waste 2. A. sunlight B. dip C. pipe D. tire 3. A. deposit B. detergent C. intend D. reduce 4. A. plastic B. compost C. place D. phone 5. A. fields B. plants C. trees D. newspapers 6. A. compost B. envelope C. throw D. bottle 7. A. reused B. returned C. mashed D. refilled 8. A. waited B. mixed C. pressed D. wrapped

3. Trường hợp nào không chứa câu nghi vấn? a. Gặp một đám trẻ chăn trâu đang chơi trên bờ đầm, anh ghé lại hỏi: " Vịt của ai đó? " b. Lơ thơ cồn cỏ gió đìu hiu, Đâu tiếng làng xa vãn chợ chiều. ( Huy Cận - Tràng Giang ) c. Nó thấy có một mình ông ngoại nó đứng giữa sân thì nó hỏi rằng: - Cha tôi đi đâu rồi ông ngoại? ( Hồ Biểu Chánh, Cha con nghĩa nặng) d. Non cao đã biết hay chưa Nước đi ra bể lại mưa về nguồn. ( Tản Đà, Thề non nước).

28. John came ______ an old school friend in the street this morning. (with / along / across / off) 29. She asked her children ______ (to stop playing / stop to play / stop playing / stopping to play) 30. He is not ______ ride a motorbike. (enough old to / enough old for / old enough to / old enough for) 31. I don’t talk much in public. I am rather (kind / sociable / reserved / humorous) 32. The children go to school .................. . ( myself/ himself/ herself/ themselves) 33. You must look in the (advertisement / recreation / diversion / participation) section of the newspaper to find out what films are showing. 34. The moon ................... around the earth (went/ goes/ go/ going) 35. (Would / Could / Do / Will) you like to go to the movies? – I’d love to. 36. Don’t go ................ , it is too cold. (inside/ outside/ downstairs/ upstairs) 37. They have waited for her (for / since / at / from) 6 o’clock. 38. This neighborhood is (different / the same / as / like) from that one. 39. What does she look like? (She look beautiful / She is beautiful / She looks like beautiful) 40. The calendar is (on / under / behind / in) the clock. 41. Minh and I didn’t enjoy (myself / ourselves / himself / themselves) at the party. 42. When my father was young, he used to (singing / sang / sings / sing) very well. 44. You should work (hardly / hard / good / badly) in order to pass the exams. 45. It is too dark (to take / take / taking / took) photographs here. 46. Jim is not old enough (read / reading / to read) this book. 47. Could you do me a favor? (What can I do for you / Thanks a lot / It’s very kind of you / No, thank you. I’m fine) 48. I (haven’t met / don’t meet / didn’t meet / won’t) since 2008. 49. The doctor said he (should go/ to go /going/ goes) to bed earlier. 50. They got married and lived (happy / happily / happiness) WRITING * Combine, rewrite the following sentences, using: … (not) + adj + enough... 1. She can’t drive a car. She is too young. => 2. We are lucky. We have a lot of friends at school. => 3. The book is so interesting. I read it twice. => ………………………………………………………………………………………………. 4. I’m very tired. I can’t do any more work. => ………………………………………………………………………………………………. 5. We like watching this film. It is interesting. =>………………………………………………………………………………………………… 6. We don’t buy the flat because it isn’t large. =>………………………………………………………………………………………………… * Rewrite each of the sentences so that the meaning stay the same as the given one. 1. Peter is too short to reach the shelf. => Peter is not ……. 2. I intend to come over to pick you up. => I am………………………………………………………………………………………….. 3. Her hair is long, straight and black. => She has………………………………………………………………………………………. 4. The report is so interesting that I can listen the end point. => The report…………………………………………………………………………………….. * Guided sentence building. 1. Loan / visit / grandparents / last weekend. => 2. Van / going / have / math / school / tomorrow. => 3. We / going / see / movie Dream City / 7 o’clock / this evening. => * Put the words in the correct order to make meaningful sentences. 1. time / I / most / my / with / spend / of / Hoa => 2. long / is / a / girl / she / black / with / nice / hair. => 3. there / in / refrigerator / is / corner / kitchen / a / of / the / the / right => ………………………………………………………………………………………………. 4. please / do / it / help / me, / I / can’t / myself => ………………………………………………………………………………………………

Giải giúp em với ạ , em cảm ơn ❤

Cho tam giác ABC nội tiếp đường tròn tâm O. Tiếp tuyến của đường tròn ở B và C cắt nhau ở D. Qua D kẻ 1 cát tuyến cắt đường tròn tại E và F, cắt cạnh AC tại I. Cho biết EF song song với AB. CMR: I là trung điểm của EF

Trong không gian với hệ tọa độ Oxyz, cho ba điểm A B C (1;1;1), ( -1;3; -1), (0, 2,3) và mặt phẳng ( P):x+y+2z-6=0 . Tìm M thuộc (P) sao cho |vectoMA +2vectoMB +3vectoMC|nhỏ nhất. Mọi người chỉ dùm e vs cái đáp án kĩ hơn chút ạ đọc không hiểu cái hệ lấy đâu ra

Phân số nào dưới đây là phân số tối giản? a)60 70 b)57 59 c)44 56 ​ d)59 57 ​

Trình bày đặc điểm chung của virus

giải hệ phương trình x+2/x+1 +2/y-2=6 5/x+1 - 1/y-2=3 Help me