user-avatar
binh2007
2 năm trước
Câu 5: Tìm a, b để đường thẳng ax – 2y = b đi qua điểm M(1;2) và giao điểm của hai đường thẳng (d): x – 2y = 4, (d’): –3x + y = 3. Câu 6: Tìm n để hệ phương trình x+2y =n có nghiệm (x;y) thỏa x < 0, y > 0. 2x-3y=5 Gíup với ạ mng
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

III. Read the dialogue and choose the best answer A: The traffic (21) _______ much worse now. B: Yes, it (22) _______ easy to park in the city center. A: That’s right. B: I remember when you could park outside (23) _______ shop you were going to. A: Yes, you could park (24) _____ at one time, but now there (25) _____ parking meters everywhere. B: And they turned so many roads (26) _______ one-way streets now. A: I know. B: It will take a while before every one becomes (27) _______ with it. A: Actually, I miss the good old days when we (28) _______ to the shops. (29) _______ were no cars at all on the roads then. B: Mind you, I must say I prefer (30) _______ by car. 21. A. got B. is getting C. used to get D. getting 22. A. would be B. used to be C. is being D. use being 23. A. some B. any C. much D. many 24. A. anywhere B. somewhere C. nowhere D. everywhere 25. A. is B. are C. was D. were 26. A. to B. in C. into D. onto 27. A. friendly B. usual C. common D. familiar 28. A. cycle B. cycled C. used to cycle D. used to cycling 29. A. There B. That C. Their D. These 30. A. travel B. travelled C. travelling D. to travelling

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team