tìm x,y,z y+z+1/x = x+z+2/y = x+y-3/z = 1/x+y+z

Mọi người cho mình hỏi cách tạo 1 link mà khi nhấp vào đó có thư sẵn luôn í, tức là khi mình nhấp vào link đó sẽ có sẵn nội dung luôn í

Giúp mình câu này với. Their computers ____ are connected to the internet are very prone to targeted virus attacks and may end up crashing. A. that B. whose C. who D. when

Cho M là trung điểm của AB. Trên cùng một nửa mặt phẳng bờ AB kẻ Ax vuông góc với AB; By vuông góc với AB. Lấy C thuộc Ax; D thuộc By sao cho MC vuông góc với MD. Gọi CM cắt tia đối tia BD tại E. Chứng minh: a) Tam giác AMC=tam giác BME b) Tam giác DMC= tam giác DME c) AC + BD = CD câu c mk cần gấp

Cho em hỏi là: Cm hình thang có 2 cạnh bên bằng nhau và không song song (giao nhau) thì đó là hình thang cân.

Nhanh mình cần ngay okkkkkkkkkk

Làm giúp mình bài 3 và bài 5 vs ạ...

I. Put the verbs in brackets in the present perfect or past simple tense. 1. We (never watch) __________ that TV programme. 2. I (have) __________ a little trouble with my car last week. 3. I (not see) __________ John for a long time. I (see) __________ him 3 weeks ago. 4. I (meet) __________ Mary last night. She (become) __________ a very big girl. 5. He is very thirsty. He (not drink) __________ since this morning. 6. It is very hot. Summer (come) __________. 7. They (study) __________ at this school for 7 years now. 8. They (begin) __________ to study at this school 7 years ago. 9. Since when (you know) ___________ her ? 10. She (lose) __________ her handbag on the train yesterday morning. 11. My mother (be) ________ in hospital for a long time and she cannot go home yet. 12. His dog (just run) __________ out of the garden. 13. Mr Brown (travel) __________ by air several times in the past. 14. So far, we (not/ notice) ______________ anything unusual, but we (not/pay) ______________ very close attention. 15. I am sorry I (not/come) ______________ to class lately. 16. I (work) ______________ late in the evenings for the past fortnight. 17. I wonder if Mary (reach) ______________ home yet? She (leave) ______________ too late to catch the bus. 18. Here is the news. The Home Office (announce) ______________ that the two prisoners who (escape) ______________ from Dartooor prison earlier this morning (give themselves up) ______________ to local police. 19. (you/make up) ______________ your minds? What (you/decide) ______________ to do? 20. Harry (leave) ______________ home rather suddenly and we (not/hear) ______________ from him since. 21. Recent research (show) ______________ that Columbus (not/discover) ______________ America, but the Vikings (land) ______________ there five hundred years before him. 22. I think people (become) ______________ tired of the poor quality of TV programmes, though they (improve) ______________ lately. ThS. Triệu Tuấn Anh (Khoa Tiếng Anh, ĐH Sư phạm Hà Nội) Page 2 23. (something/happen) ______________ to the phone lines? I (try) ______________ to get through to Glasgow for the past hour. 24. Bill (get) ______________ that new job, but he (complain) _____________ about it ever since

1/2 .2 + 1/4 .2 + 1/6 .2 HELLLLLP

Gi ải hệ pt: $\left \{ {{x+y+xy+1=0 } \atop {x^{2}+y^{2}-x-y=22}} \right.$