Xin gửi chủ tus ạ
`a)y=f(x)=-2/3x+5a`
Vì `-2/3<0`
`->`Là hàm số nghịch biến
`b)y=f(x)=5x+a^2-1/2`
`=x.5+(a^2-1/2)`
Vì `5>0`
nên đây là hàm số đồng biến
7. The workers (work) _______________ in the firm at the moment. 8. How many times _________ you (see) ________him since he went to Edinburgh? 9. Rivers usually (flow) __________ to the sea. 10. Look! The boy (cry) _______________. 11. Do you know that man, who (smoke) _______________________ there. 12. Mrs. Green always (go) _____________to work by bus. 13. We (be) ____________ from French. We (be) ______________ there for 20 years. 14. I (move) ______________ to another town next week. 15. I (see) __________ that film several times because I like it. 16. She always (go) _______________ go to bed before her mother does. 17. Mary (lose) _________________ her hat for 2 days. 18. __________you (take) _________ a trip to London next week? 19. She rarely (take) ____________a bath before dinner. 20. He (not finish) _______________ doing it yet. 21. He (not see) ____________ him since Christmas. 22. In what year _______ World War II (break) __________ out? 23. The sun (set) ______________ in the West. 24. They (live) _______________ in Ho Chi Minh City since 1975. 25. He (come) _________ here once 2 years ago. 26. We will go out when it (stop) _________________raining. 27. She (read) ______all the books written by Dickens. How many books _______ you (read) _______? 28. Alice and Mary (put) ___________ the dishes away right now. 29. What ________you (do) _________ at 10 am yesterday? 30. She (finish) ____________ her homework recently. 31. He (just see) ______________ her. 32. They (already show) _______________ the film. 33. I’m sorry the car is not here. I (just sell) ______________ it. 34. When _________you (buy) ________ your bicycle? 35. I (know) ______Jack since we (be) ________ students but I (not meet) ______ him since we (leave) _______ school in 1998. 36. The Bakers (be) ______________ in New York for 3 months. 37. __________you (spend) _________ your holiday in Da lat last summer? 38. We (visit) ___________ that city last year. 39. The farmer (work) _________________ in the field now. 40. John (see) ______________ that film sometimes. 41. My brother (use) ______________ this computer for 2 years. 42. Mr. Green (buy) ______________ a new tractor last month. 43. They (live) ________________ in this street for a long time. 44. My brother (play) _______________ football at the moment. 45. Mr. Green (teach) ______________ French since he left London in 1997. 46. She often (go) _____________ to school by bicycle but yesterday she (go) __________by bus. 47. Look! It (snow) _______________. 48. She (not speak) _________________ to me since last week. 49. Up to now, Hoa (work) _______________ very hard. 50. HCM city (be) ______________ the largest city in Vietnam. 51. They (hold) ________________ the meeting recently. 52. Phong (sleep) _______________ right now
They are both hard-working, but Jane is______more hardworking than Kim. 1 điểm by far one of a bit much 20. This hotel is not as comfortable as that one. 1 điểm This hotel is more comfortable than that one. This hotel is less comfortable than that one. That hotel is less comfortable than this one. That hotel is not as comfortable as this one. 21. This game was the _______exciting game I have ever joined. I was a bit sad. 1 điểm more most less least 22. ________the air is, _________we are. 1 điểm the dirtier- the weaker the more dirty- the more weak the dirtiest- the weakest the most dirty- the most weak 23. It is considered that life in a city is wonderful and________. 1 điểm A. unpleasant B. boring C. enjoyable D. helpful 24. Singapore is one of________in Asia. 1 điểm the cleaner city the cleaner cities the cleanest city the cleanest cities 25. Ann is taking extra lessons to________what she missed while she was sick. 1 điểm A. come up with B. get on well with C. keep up with D. look forward to
help me tks :333 cãm ơn rất nhìu :3333
Anh chị ơi giúp em 3 bài tập này với ak><
Mn ơi giúp mình với mình cần gấp để nộp bài c.ơn mn nhìu
giúp e vs ạ 20 phút nx là nộp rồi
Mn giúp vs ạ .Em đang cần trước 13h Hãy in ra chữ số tận cùng của số m^n.Với m,n là các số nguyên nhập từ bàn phím (0<m<10^9, 0<n<10^16)
Cho bảng ô vuông gồm 10 dòng và 10 cột. Hai bạn Tín và Nhi tô màu các ô, mỗi ô một màu trong 3 màu: xanh, đỏ, tím. Bạn Tín bảo: "Lần nào tô xong hết các ô cũng có 2 dòng mà trên 2 dòng đó có một màu tô số ô dòng này bằng tô số ô dòng kia". Bạn Nhi bảo: "Tớ phát hiện ra bao giờ cũng có 2 cột được tô như thế". Nào, bạn hãy cho biết ai đúng, ai sai?
Em chỉ cần câu c thôi ạ Cho hình chữ nhật MNPQ có MỌ=6 cm, PQ=8 cm. 1) Tính MP. 2) Đường thẳng đi qua Q và vuông góc với MP tại A cắt MN tại O và cắt tia PN tại điểm I. Tính AQ 3) Chứng minh rằng AQ^2= AB×AI và tính NAP
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