$2x-x<x+4$
$⇔2x-x-x<4$
$⇔0x<4$
$⇔x = ∞$
2x-x<x+4 (=)x<x+4(=)x-x-4<0(=)0x-4<0(=)0x<4 (luôn đúng)
1.It is not good if you exercise too hard for to You shouldnt........................................... 2. what was the reason for your absence at the class meeting last monday ? Why ................................................................. 3. You are not allowed to play football in the street . Dont........................................................................ 4. My father runs five kilometers every day , so he is strong and fit . My father is strong and fit because ...................................................... 5.Im not as interested in table tennis as my brother. My brother ...................................................
Chứng minh các biểu thức sau xác định với mọi giá trị của x (5-7x)/(x^2+x+1) -7/3 x+10 /(4x^2+2x+3 ) -(x^2+4)/2
Bằng những hiểu bbieet của mình em hãy viết đoạn văn thuyết minh về những triệu chứng của bệnh viêm phổi cấp tính do virut corona gây ra. Trong đoạn văn có phần chỉ cách phân biệt vs những triệu chứng ho cảm cúm thông thường. Giúp e vs ạ
Bạn hãy dịch câu này thành Tiếng Anh thời tiết ở Hà nội ngày hôm nay đẹp quá nhưng Miami rất ấm và tôi thích đi biển
III.Change the active into the passive : 1. Mai wrote a note on the board - ………………………………….............................................. 2. They will recycle the waste paper in a local factory . - ………………………………………………………………………………………………...... 3. Mr Minh grows vegetables in his small garden . - ………………………………………………………………………………………………...... 4. My brother has just repainted the bicycle . - ………………………………………………………………………………………………..... 5. The artists are painting a big picture in front of the Town Hall . - …………………………………………………………………………………………............. 6. People speak English all over the world .- ………………………………................................. 7. People don’t use this road very often .- ………………………………………….................... 8. He asked us many difficult questions .- ………………………………………………........... 9. Wastes from chemical factories have caused a lot of pollution . - ……………………………………………………………………………………………… 10. They must widen the road soon .- …………………………………….................................. 11. Nobody has ever treated me with such kindness . - ………………………………………………………………………………………………..... 12 Who stole the money ? - ………………………………….................................................... 13. Why didn’t they tell me about it before ?- ………………………………………….............. 14. Has someone read my letter ? - ……………………………………..................................... 15*.Noone can do anything unless someone gives us more information . - ……………………………………………………………………………………………......... 16. We have to pick the fruit every early morning . - ……………………………………………………………………………………………........ 17. The police don’t allow people to park there .- ……………………………………………………………………………………………...... 18. They used to make little boys climb the chimney to clean them . - ………………………………………………………………………………………………. 19.Have you answered your boss’s questions ? - ……………………………………………………………....................................................... 20. The weather has turned all the leaves yellow . - ……………………………………………………………………………………………...... 21. Someone put these flowers into the vase last night . - ……………………………………………………………………………………………… 22.They often put this question to me but I never answer it . - ……………………………………………………………………………………………… 23.People used wood pulp to make paper .- ………………………………………….......... 24. They advised her not to see that horror film .- ……………………………………………… 25. The colored television has attracted people a lot since its appearance . - ……………………………………………………………………………………………… 26.They have shown that film on TV several times . - ……………………………………………………………………………………………… 27.They will publish a book on space travel next month . - ……………………………………………………………………………………………… 28.Who looked after the children when you were away ? - …………………………………………………………………………………………...... 29. We can’t make tea with cold tea .- ………………………………………….................. 30.Mary’s knowledge about art doesn’t impress me . - …………………………………………………………………………………………… 31. The teacher will assign us to write an essay . - …………………………………………………………………………………………… 32. How do you learn English at home ? - ………………………………………………………………… 33. Nobody speaks French here . - ……………………………………………………………………….. 34. Don’t speak until someone speaks to you .-…………………………………………………………… 35.Why did no one inform me of the change of plan ? - ………………………………………………………………………………………………
giúp mình nhé/*******************************************
giải giúp mình cauau3 caauu4 ảnh hơi mòe rán nhìn giuaps mình
Rewrite the following sentences, using the words given: 17. It is not a good idea to swim immediately after a meal. - You shouldn’t ………………………………………………………………………. 18. It is good for your health to drink enough water. You should ………………………………………………………………………. 19. They are likely to have a party next Sunday. They will ………………………………………………………………………........ 20. Why don’t we go to Times Square to welcome the New Year? How about ………………………………………………………………………...... 21. You shouldn’t spend a lot of time watching TV. It is not good to ………………………………………………………………………. 22. Millions of viewers around the world are attracted to Discovery channel. Discovery channel attracts ……………………………………………………………… 23. “Hello Fatty” is both entertaining and educational to young audience. “Hello Fatty” can ………………………………………………………………………. 24. I am tired, so I will go to bed early. ………………………………………………because……………………………. 25. How much time do you spend watching TV a day? How many hours ……………………………………………………………………….
Một cửa hàng ngày đầu bán được 1,5 tấn gạo. Ngày thứ hai bán nhiều hơn ngày thứ nhất 0,5 tấn gạo. Ngày thứ ba bán được nhiều hơn mức trung bình cả ba ngày là 0,1 tấn gạo. Hỏi ngày thứ ba bán được bao nhiêu tấn gạo ? giải theo cách cấp 2 nha . Đừng spam
so sánh tuyến nội tiết và tuyến ngoại tiết .Cho ví dụ.Nêu tính chất và vai trò của hoocmon
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