1.Tìm số nguyên x sao cho: a) -3/4 < 9/10 < -3/5 b) -5/12 < 9/5 < 1/4 2. Cho số hữu tỉ x=3/2a-1. Tìm số nguyên để x là số nguyên 3. Tìm các số nguyên x và y biết rằng x/6-1/y =1/2

a. 3m/min=...cm/min b. 300 000km/s=...km/h c. 5m/min=...cm/s d. 8cm/min=...m/s

CMR: Nếu a+c=2b và 2bd=c(b+d); (b,d khác 0) thì a/b=c/d

Nhân vật có phải là thừ Hán Việt ko

Mọi người vẽ hộ em sơ đồ tư duy củng cố tất cả kiến thức đã học trong bài: MỘT SỐ TÍNH CHẤT CHÍNH CỦA ĐẤT TRỒNG sgk công nghệ lớp 7 với ạ

Bài tập ứng dụng Chia động từ trong ngoặc ở thì quá khứ đơn: 1. Yesterday, I (go)______ to the restaurant with a client. 2. We (drive) ______​ around the parking lot for 20 mins to find a parking space. 3. When we (arrive) ______ at the restaurant, the place (be) ______ full. 4. I (say)​, "No, my secretary forgets to make them." 5. The waitress (tell)______ us to come back in two hours. 6. My client and I slowly (walk) ______ back to the car. 7. Then we (see) ______ a small grocery store. 8. We (stop) in the grocery store and (buy) ______ some sandwiches. 9. That (be) ______ better than waiting for two hours. 10. I (not /go) ______ to school last Sunday. 11. She (get) ______ married last year? 12. What ​you (do) ______ last night? 13. I (do) ______ my homework. 14. Yesterday, I (get) ______ up at 6 and (have) ______ breakfast at 6.30. 15. He ( walk)​ to school yesterday. 16. They ( do)​ their homework last night. 17. We (watch)​ an interesting program on television last night 18. My wife and I (travel) ​to Mexico by air last summer 19. I (have) ...................a little trouble with my car last week Chia động từ ở thì hiện tại hoàn thành 1. There is no more cheese. I (eat)……………. it all, I’m afraid. 2. The bill isn’t right. They (make)………….. a mistake. 3. Don’t you want to see this programme? It ………….(start). 4. It’ll soon get warm in here. I (turn)……….. the heating on. 5. ………they (pay)…….. money for your mother? 6. Someone (take)………………. my bicycle. 7. Wait for few minutes, please! I (finish)……………. my dinner. 8. ………you ever (eat)………….. Sushi? 9. She (not/come)…………… here for a long time. 10. I (work)…………..here for three years. 11. ………… you ever …………..(be) to New York? 12. You (not/do) …………...........your project yet, I suppose. 13. I just (see)………. Andrew and he says he ……..already (do)………. about half of the plan. 14. I ………..just (decide)……… to start working next week. 15. He (be)…………. ..........at his computer for seven hours. 16. She (not/have) ……………any fun a long time. 17. My father (not/ play)……….. any sport since last year. 18. I’d better have a shower. I (not/have)………. one since Thursday. 19. I don’t live with my family now and we (not/see)…………. each other for five years. 20. I…… just (realize)…………... that there are only four weeks to the end of term. 21. The train drivers (go)……… on strike and they stopped working at twelve o’clock. 22. How long…….. (you/know)………. each other? 23. ……….(You/ take)………… many photographs ? 24. (She/ eat)………………. at the Royal Hotel yet ? 25. He (live) ………….here all his life.. 26. Is this the second time he (lose)……………. his job ? 27. How many bottles………… the milkman (leave) ………….? 28. He (leave) …………..six. 29. I (buy)…………. a new carpet. Come and look at it. 30. She (write)………….. three poems about her fatherland. 31. We (finish) ……………………three English courses. Chia các động từ trong ngoặc ra thì simple past hoặc present perfect: 1. We (study) ……………a very hard lesson the day before yesterday 2. We (study) ……………………almost every lesson in this book so far 3. We (have/ never /watch)……………….that television program 4. We (watch) …………………….an interesting program on television last night 5. My wife and I ……………… (travel)by air many times in the past 6. My wife and I (travell)……………….. to Mexico by air last summer 7. I (read) ………………that novel by Hemingway sevaral times before. 8. I (read) …………………….that novel again during my last vacation . 9. I (had) …………………….a little trouble with my car last week. 10. However, I (have )……………………. no trouble with my car since then. 11. I (have ) ………………..this toy since my birthday. 12. We (live )………………….in HN for ten years now and like it a lot. 13. The last time I (go) ……………………to HN was in May 14. When my parents were on holiday I ( stay)……………… with my aunt for a week 15. I (not see ) .........................my son for ages .He (not visit ) ……………………..me since May 16. Tom ( be) …………….to HN twice .He loves it very much 17. My sister (work ) ………………for an enterprise for two years .That was after college 18. I (move)……………… to HN in 2001 .I (be ) ………….there for a long time now. 19. It was so cold today that I (wear)…………… a sweater at school 20. So far this month there (be )……………………. three robberies in this street 21. When I was young I (meet )…………..him three times 22. In the past few years ,it (become )……………….. more and more difficult to get into university 23. I (feel )………………better since I ( live) ……………….here 24. Since I (be ) ……………………in this city I ( not see)…………… him

giúp mik với ko lấy trên mạng nha plssss

Giúp em câu 4 với ạ Em cám mơn nhìu

Bài 2: Điển liên từ"and/but/or/so" vào chỗ trống để tạo thành câu ghép. 1. I am very thirsty_______I don't have any money to buy drinks. 2. It's late_______I'm still wide awake. 3. We live in a small house_______we like it very much. 4. My friend looks wea_______k he's really strong. 5. The entrance test is very difficult_______I hope I will pass it. 6. You go home now_______ your mother will punish you for staying out too late. 7. Fruits taste good_______ they are healthy for your body. 8. I like small dogs_______ I hate big ones. 9. My brother is having the flu_______ I think he won't be absent from school today. 10. Our project is successful _______all of us are happy about it. 11. He performs very well,_______he deserves the reward. 12. Take care of yourself_______ you will go down with disease. 13. My mother usually gets home at 5pm_______then she prepares dinner. 14. Stop eating raw food_______ you will have stomachache. 15. Janet thinks Chemistry is a difficult subject_______ she is interested in it. 16. The phone doesn't work well,_______Ana sells it and buys new one. 17. There is a need for a new fridge in Tom's kitchen_______ he lacks money now. 18. He is very good-looking_______ he seems to lack personality. 19. Will you speak to him_______ I speak? 20. I have an allergy to seafood,_______ I can't taste it. 21. This exercise is challenging_______it is helpful. 22. I am going to the beach,_______I buy some sunscreen. 23. My little brother dreams of becoming a pilot_______he wants to travel around the world. 24. The singer is suffering from sore throat, _______ he won’t perform tomorrow. 25. Tomorrow is my sister's birthday,_______ I am making a cake for her.

x^2(x^2-4)-x^2+4 phân tích thành nhân tử