user-avatar
thaokim592001
2 năm trước
Trong mặt phẳng tọa độ Oxy. Cho hình thang ABCD có đáy lớn là AB và biết ba đỉnh A ( -2;3), B (4:-1), C (-5;2) a) viết ptts của đường thẳng BC b) viết pttq của đường thẳng CD giúp em với em cần gấp ạ :((
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Xác định bảy từ loại đã học (danh, động, tính, số, lượng, chỉ, phó) có trong đoạn văn sau đây (bằng cách gạch chân và chú thích tên từ loại – viết tắt – bên dưới): Một tuần trước ngày Huế nổ súng kháng chiến, dân trong thành phố được lệnh tản cư hết về các vùng quê. Nhưng qua mấy ngày đầu đánh nhau, tin tức thắng lợi từ Mặt trận đưa về dồn dập. Tin thắng lợi một đồn mười, mười đồn trăm, nên đồng bào chắc mẩm tụi Tây sắp đầu hàng đến nơi rồi. Do đó, không ai bảo ai, mon men kéo dần về phía thành phố. Họ nóng lòng sốt ruột được mau mau trở về dọn dẹp lại nhà cửa, phố xá, trở về với công việc làm ăn thường ngày

e lại cần sự trợ giúp nx các thánh tiếng anh 1. This house __________ in 1970 by my grandfather. * 1 điểm a) Built b) Was built c) Was build d) Has built 2. The robbers ————————- by the police. * 1 điểm a) Have arrested b) Have been arrested c) Was arrested d) Had arrested 3. We ———————- for the examination now. 1 điểm a) Have preparing b) Are preparing c) Had preparing d) Have been prepared 4. It ——————— since yesterday. 1 điểm a) Is raining b) Has been raining c) Have been raining d) Was raining 5. This machine ————————- for five hours. 1 điểm a) Have been working b) Has been worked c) Was working d) Am working 6. The students ———————- to submit their reports since this week. * 1 điểm a) Have asked b) Are asked c) Has asked d) Are asking 7. As the patient could not walk he ———————– home in a wheelchair. 1 điểm a) Has carried b) Has been carried c) Was carried d) Was carrying 8. The students ——————— for lying by the teacher. 1 điểm a) Have been punished b) Punished c) Is punished d) Was punished 9. I ——————— to become a successful writer. 1 điểm a) always want b) Am alwys wanted c) Was always wanted d) Am always wanting 10. The injured people ———————- to the hospital in an ambulance. 1 điểm a) Were taking b) Was taking c) Were taken d) Have taken

1. By the end this month, they (be) in HaNoi for 1 month. → 2. By December, we (learn) English for 6 years. → 3. By the end of this week, they (marry) for 2 years. → 4. We (finish) this work in 3 days. → 5. By the time they arrive at the village, all the villagers (leave) for another valley. 6. By the time he gets to the airport, the plane (take) off. → 7. When we go to our class, the lesson (start) for 15 minutes. → 8. I know before they come to my house, I (go) out for a walk. → 9. We have got 2 hours. We (do) all the house work by the time your parents arrive. 10. These machines (work) very well when they get their first service next month. → 11. By the time we find them on the mountain, they (suffer) from coldness and hunger for 6 hours. → 12. By this time tomorrow they (visit) Paris for the first time. → 13. Tom is a first year student. By the end of next year, he (learn) chemistry for 3 years→ 14. By 2010, the number of schools in our country (double). → 15. In twelve month’s time, the average income of our people in our country (rise) 5 percent, while inflation (not rise) at all. → 16. I hope they (repair) the road which leads to Huong Vy and Dong Son commune by the time we come back next summer. → 17. Roy can’t ski better. I know by the end of this month, he (have) lessons for a full month. → 18. By the time you arrive, I (write) the essay. → 19. By the year 2012 many people (lose) their jobs. → 20. By 5:30 p.m, we (sit) here for 3 hours. → 21. In 10 more minutes, they (wait) for him for 2 hours. → 22. Before he graduates from his university, he (stay) in HaNoi city for 4 years. → 23. When she retires, he (work) for this factory for 30 years. → 24. By the time we get to the nearest city, we (drive) for 5 days. →

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