user-avatar
huankunai
2 năm trước
Định m để 3 đường thẳng sau đồng quy a) 2x – y = m ; x - y = 2m ; mx – (m – 1)y = 2m – 1 b) mx + y = m2 + 1 ; (m +2)x – (3m + 5)y = m – 5 ; (2 – m)x – 2y = -m2 + 2m – 2
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Find a suitable word to fill in each blank. Hi. My name is Ngoc. I’m a student (1) ................... a secondary school in Lang Son. My friends often say I have an unusual hobby. I have a little notebook. I always have it (2)....................me. I try to fill one page a day. Can you guess what I fill in each page (3)..................my notebook? Well, it is English (4) .................... Sometimes I put words in (5) ..........................., like fruit – all kind of fruits, you know? Or color, or clothes, or things and the shops where you (6) ...........................them. I have ..................... (7) grammar pages where I write irregular verbs, or a page (8) ............................prepositions. I think prepositions are difficult, you know- on Sunday, in the morning, listen to a concert – but you say phone someone. In Vietnamese, we say phone to someone. Do you think my hobby ..............(9) unusual? Do you have any favorite hobby? Please, (10) .............. it with me!

. Choose the correct answer.(1) 1. The villagers are trying to learn English ____ they can communicate with foreign customers. A. so that B. in order that C. although D. A and B are correct 2. I’ve been to a _____ village in Hue! A. conical hat making B. making conical hat C. making conical hats D.hat making conical 3. _____ we had eaten lunch, we went to Non Nuoc marble village to buy some souvenirs. A. After B. Before C. By the time D. Because 4. Do you think that the various crafts remind people _____ a specific region? A. about B. of C. for D. at 5. _____ this hand-embroidered picture was expensive, we bought it. A. As B. Because C. Even though D. so that 6. Conical hat making in the village has been passed _____ from generation to generation A. on B. down C. up D.in 7. This department store is an attraction in my city _____ the products are of good quality. A. when B. because C. though D. 8. A conical hat is a well-known handicraft, not only in Viet Nam, _____ all around the world. A. and B. but C. so D. or 9. This is called a Chuong conical hat _____ it was made in Chuong village. A. but B. so C. since D. because of 10. They can’t because we have lots of products. They make some and other people make____. A. the rest B. the last C. the other D. others

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