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tham09
2 năm trước
Bài 1: Tìm x thuộc Z để a) (5x+2) chia hết cho (x+1) b) (2x+16) chia hết cho (x+8) c) 3x chia hết cho (x+2) Bài 2: Tính tổng các số nguyên x biết a) 24 ≤x ≤2017 b)x chẵn và 6 ≤x<2017 c)x lẻ và 7 <x<2017 d) 12 ≤x ≤2017 và x chia hết cho 5 Bài 3:Tính các tổng sau: a) S=1-2+3-4+......+2005-2006 b) S=1-3+5-7+.......+2001-2003 c) S=2-4+6-8+.........+2008-2010 Mn cố lm hết hộ mik đg cần gấp lắm rồi.Ai lm hết mik cho 5 vote,1 cảm ơn và là người có câu hỏi hay nhất Thank you các bạn rất nhiều
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V. Read the passage and answer the questions: The streets are crowded with traffic. Taxis are bringing tired people from the airport and the train stations to the hotels. They hope to sleep a few hours before their busy day in the big city. Trucks are bringing fresh fruit and vegetables into the city. Ships are bringing food and fuel to the harbour. By seven o’clock in the morning, the streets are filled again with people. Millions of people live in the big city, and millions of people who work in the big city live in the suburbs, the commuters, are hurrying to get to their offices. Everyone is in a hurry. Some stop only to drink a cup of coffee. Others stop to buy a morning paper or to have breakfast. The noise of traffic gets louder. The policemen blow their whistles to sto the traffic or to hurry it alone. 1. Where do taxis often take people from? ………………………………………………………………………………………………….. 2. What are trucks bringing? And what about ships? ………………………………………………………………………………………………….. 3. Who are commuters? ………………………………………………………………………………………………….. 4. What do people often do when they are in a hurry in the early morning? …………………………………………………………………………………………………. 5. What do the policemen do to control the traffic? ……………………………………………………………

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