Tìm số nguyên n để: (2n + 1) : (6 - n)

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11. He went to his house, lied down on the bed, and (sleep) ……………… right away. 12. I (buy) ……………… the ticket yesterday. I am (go) ……………… Dalat tomorrow. 13. Tim (attend) ……………… the meeting at school at the moment. 14. He (have not) ……………… English for 2 years. 15. Our class (start) ……………… at 9am. 16. I always (brush) ……………… my teeth before I go to bed. 17. I (study) ……………… English since I was 21. 18. He was listening to music when his boss (come) ……………… yesterday. 19. I (have do) ……………… all the homework all afternoon. 20. She (wait) ……………… you for all day. 21. He wasn’t working when his boss (call) ……………… him yesterday. 22. She (be) ……………… at her boyfriend’s house yesterday morning. 23. I (talk) ……………… to my father at the moment. 24. We (be) ……………… in Nhatrang on their summer holiday last year. 25. The sun (rise) ……………… in the east. 26. He (meet) ……………… his old friend near his house yesterday. 27. The World Cup (take place) ……………… every four years. 28. They (play) ……………… in the garden at 4 pm yesterday. 29. She was watching a picture while her mother (cook) ……………… soup. 30. Anne was riding her bike to school when Peter (see) ……………… her yesterday

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viết 1 đoạn văn 12 câu có sử dụng câu bị động và thành phần khởi ngữ làm rõ Vũ Nương yêu chồng thương con,gạch chân yêu cầu TV

Ngâm 1 lá Al trong 500ml dd AgNO3 0,36M. Sau một thời gian phản ứng thấy khối lượng lá Al tăng lên 5,94g a) Tính khối lượng Al đã phản ứng b) Tính Cm của các chất trong dd sau phản ứng biết Vdd ko đổi

TA 1,tìm lỗi sai và viết lại câu đúng 2.Does Mr . and Mrs. parker make potteri everyday? 3.Does bird-watching is Tom's hobby? 4.How often you polish your car?

làm tính chia 2x mũ 4 - 5x mũ 2 + x mũ 3 -3 -3x : x mũ 2 -3 x-y-z mũ 5 : x-y-z mũ 3 x mũ 2 + 2x + x mũ 2 -4 : x + 2 2x mũ 3 + 5x mũ 2 - 2x + 3 : 2x mũ 2 -x + 1 2x mũ 3 - 5x mũ 2 + 6x - 15 : 2x - 5

Tìm số nguyên x,y biết: 42 - 3|y-3| = 4(2018-x)^4

√9+4√5 rút gọn giúp mình với ạa