Calli: " Time " .................

Ở chất béo k=5 thì cộng mấy h2 ???

1. If I have a jet pack, I will use to fly anywhere easily. A. my B. mine C. his D. their 2. We are looking for cheap, clean, sources of energy. A. polluting B. harmful C. expensive D. effective 3. Don’t forget to the lights when leaving a room or going to bed. A. turn B. turn on C. turn off D. turn out 4. The use of biogas for cooking in the countryside. A. will increase B. will be increasing C. will be increased D. will have increaded 5. Is this schoolbag ? A. you B. your C. yours D. them 6. Which is the best of transport for the future? A. mean B. means C. traffic D. ways 7. Wear a hat you’ll get sunburnt. A. and B. or C. but D. so 8. Stay outdoor and do physical exercises. A. more – less B. less – less C. more – more D. less – more

Cho phương trình: x² - (2m - 1)x + m - 3 = 0. a. Tìm m để pt có 2 nghiệm thỏa mãn `2x_(1) + 3x_(2) = 13` b. Với trường hợp pt trên có 2 nghiệm `x_(1), x_(2)`. Tìm hệ thức liên hệ giữa `x_(1)` và `x_(2)` mà không phụ thuộc vào m.

Làm 3 câu thoi có giải thích chi tiết

Kể lại chuyện Lý Tự Trọng theo cách rút gọn Ví dụ: {KỂ ĐƯỢC 10 THÌ RÚT GỌN LẠI CÒN 5 CÂU}

16. (students/ use) the school computers now? 17. Mrs. Brown can't answer the phone because she (have) a meeting now. 18. At present, the government (look) for the terrorists in an attack near a primary school. 19. My friend (ring) _____________ me yesterday and (invite) _____________ me to his party. 20. What (you/ watch) _____________ on TV last night? 21. When my father (be) _____________ young, he (use to) _____________ be the most handsome boy in the village. 22. _____________ (you/ go) to see the concert yesterday? 23. Last week, my mother (take) _____________ me to the zoo. 24. Last summer, my father (teach) _____________ me to drive. 25. I just (decide) to start working next week. 26. He (be) at his computer for seven hours. 27. She (not/ have) any fun for a long time. 28. My father (not/ play) any sport since last year. 29. I’d better have a shower. I (not/ have) one since Thursday. 30. Someone (take) my bicycle.

cho a,b,c thỏa mãn a+b+c=0.tính giá trị biểu thức P=(b-c /a +c-a /b +a-b /c)(a /b-c +b /c-a +c /a-b)

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Làm hộ mình với ạ:> hứa vot 5 sao+ctlhn ạ