trung bình cộng của ba số là 42, biết rằng số thứ nhất bằng 1/2 số thứ hai ,số thứ ba là 84. tìm số thứ hai?

dàn ý phân tích tình đồng chí, đồng đội nồng ấm và tinh thần dũng cảm của những cô gái thanh niên xung phong trong văn bản NNSXX của lê minh khuê

35. We use the car all the time. We make the air polluted. > If……….………………………………………………………………….. 36. She is interested in watching cartoons >She likes .......................................................................................................... 37. Will, able to, coffee, the future, make, be, robots, in .......................................................................................................................... 38. We, lived, in, that, villa, have, many, for, years .......................................................................................................................... 39. Big Ben, in, tower, England, is, the, biggest .......................................................................................................................... 40. VTV1, most, popular, TV, channel, is , in Viet Nam, the ..........................................................................................................................

XIII. Read the passage, and then choose the best answer. Along with jogging and swimming, cycling is the best all-round forms of exercise. It can help to increase your strength and energy, giving you a stronger heart. You don’t carry the weight of your body on your feet when cycling. It is also a good form for people with a pain in your feet or your back. You should start your hobby slowly. Doing too quickly can have bad effects. You should cycle twice or three times a week. If you find you are in pain, you will stop and take a rest. 1. Why is cycling a good form of exercise? 2. Why might people with a pain in the back go cycling? 3. What will happen if you do too quickly? 4. How often should you go cycling? 5. What will you do if you find you are in pain? XIV. Use the words or phrases given to write meaningful sentences. Then, write a paragraph about your hobby or your classmate’s hobby. 1. Name of the hobby: I/ unusual hobby/ collect/ buttons. 2. When I started the hobby: When/ I/ ten/ I/ lose/ a cute button/ shirt. I/ have to/ find/ another/ to replace. 3. Why I like it: Buttons/ long history. Buttons/ be made/ different materials. They/ various sizes/ shapes/ designs/ colours. 4. Feelings about the hobby: Button collecting/ not expensive/ it/ useful/ many ways 5. Future: I/ collect/ rare buttons/ other countries. XV. Write about your book collection. Complete the gaps of the paragraph, using the cue given to you. 1. Name of your collection: - books - books about animals and plants; story books; books about school subjects - books about English-speaking countries 2. How you collect them: - buy from bookshops or second-hand book stalls - get from friends or family members 3. Why you collect them: - get information and facts - broaden knowledge and understanding 4. Your plan in the future: - make the collection larger - open library Your answer: My hobby is (1) . I collect books whenever I have money and I need some books. I collect many kinds of books such as (2) ; story books or (3)_____________ I am learning at school, you know, English, Maths, History, Geography, Biology; and books about (4) . I buy books from (5) near my house, and some others from (5) . I also get books from (6) . I collect books because I would like to (7) from books. They help me broaden (8) . In the future, I try to make my collection (9) . I would like to open (10) of my own.

!Giúp với !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

giúp ạ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

mọi người giúp em vs, em ngu tiếng anh lắm 39.Order the words to make questions: go / do / to / cinema / When / you / the/? (1 Điểm) Nhập câu trả lời của bạn 40.Order the words to make questions: listen / you / in / the / the / Do / to / radio / morning/? (1 Điểm) Nhập câu trả lời của bạn 41.Order the words to make questions: they / Where / football / do / play/? (1 Điểm) Nhập câu trả lời của bạn 42.Order the words to make questions: she / Does / French / study/? (1 Điểm) Nhập câu trả lời của bạn 43.Order the words to make questions: / brother / the / work / his / Does / city / in / centre/? (1 Điểm) Nhập câu trả lời của bạn 44.Order the words to make questions: friends / When / do / play / your / tennis/? (1 Điểm) Nhập câu trả lời của bạn 45.Order the words to make questions: have / do / When / lunch / you/? (1 Điểm) Nhập câu trả lời của bạn 46.work / in / office / Do / an / they/? (1 Điểm)

Công thức tổng dãy số học là gì ?

Hợp chất nào dưới đây không phải là hợp chất hữu cơ? A . Mêtan B. etilen C. a xit a xetic D. can xi cac bon nat Cho mẩu nhỏ Na vào ống nghiệm đựng dung dịch rượu etylic thu được khí gì? A . Khí cacbon nic B . Khí CH4 C . C2H4 D . H2 Cho CaC2 vào nước thu được : A . CH4 B. C2H6 C. C2H4 D. C2H2 Thể tích ( ml) rượu etylic có trong 2,0 lít rượu 500 là : A . 50 ml B. 100ml C. 1000ml D. 150ml

giúp mình thì mình vote 5 sao Trong chương trình lớp 9 có tác phẩm cùng đề tài với tác phẩm sapa. Đó là tác phẩm nào, tác giả là ai