Đáp án + Giải thích các bước giải:
`P=|2x-5|+3`
Vì `|2x-5|≥0∀x`
`⇒|2x-5|+3≥3∀x`
Vậy `P_min=3⇔|2x-5|=0⇔2x-5=0⇔x=5/2`
Mn phân tích bài thơ Nam Quốc Sơn Hà giúp mk vs ( kho đc lấy ở đâu hết nha)
Bài 5:Ởsiêu thịngười ta xếp các lon bia theo tầng như sau:Kểtừtrên xuống dưới thì:Tầng cao nhất có một lon biaTầng cao thứhai có hai hàng, mỗi hàng có 2lonTần cao thứba có ba hàng, mỗi hàng 3 lon....................Tầng cuối cùng có sáu hàng, mỗi hàng có sáu lonTất cảbao nhiêu lon bia?
I. Choose the best word or phrase to complete each sentence or do as directed. 1. The students have to work much ______ usual to prepare for the coming examination. A. more hardly than B. harder than C. the hardest than D. hardlier than 2. _________ of your parents will come to the party? My mother will. A. What B. Who C. Whom D. Which 3. ___________ subject do you like better, English or Maths? A. What B. How many C. How much D. Which 4. A tent can be more easily ___________ and transported than a ger. A. pulled down B. put down C. pulled up D. take down 5. I enjoy _____ the fairy in the folk tale so that I can help people with what they want. A. to be B. being C. be D. become 6. Nick, we’re goin’ to a cultural event ______ . Would you like to join us? A. WF B. EZ C. 2moro D. NUFF 7. If you fancy ________ outdoors, play some sports together. A. being B. to be C. to being D. be 8. It is dangerous to make friends with ______ when you game online. A. strangers B. adults C. teenagers D. dwellers 9. My brother is taking his buffaloes out to feed them. He’s ______them. A. raising B. riding C. herding D. feeding 10. My house is __________ decorated at new year than during the year. A. more beautifully B. more beautiful C. less beautifully D. less beautiful 11. _________ the end of the story, the dragon made friends with the princess. A. At B. In C. For D. To 12. My country broke _______ tradition by not having firecrackers on New year’s eve. A. on B. of C. with D. in 13. In my family, all the traditions of our ancestors are strictly_________. A. performed B. taken C. followed D. done 14. You can rent a tent. You _______________ bring a tent with you. A. mustn’t B. don’t have to C. can’t D. haven’t to 15.___________ means the content of the stoty. A. Plot B. genre C. Main characters D. title 17. Playing computer games too much may have _________ on your minds and bodies. A. harm effects B. harmful effects C. harmless effects D. harmfully effects 18. A lion lives in _______________ jungle. A. a B. an C. the D. that 19. In Viet Nam, the ______________ we mostly use is chopsticks. A. tray B. spoon C. cutlery D. dish 20. Going to the pagoda on the first day of the new year is a good tradition. We _________ this for generations. A. have followed B. follows C. followed D. are following 21. You shouldn’t wrap a gift __________ black and white. A. in B with C. into D. on
XII. Use the words and phrases to write a passage. 1. Stamp collection/ be/ interesting hobby. 2. You/ can learn many things, such/ the geography/ a country/ stamps. 3. Postal stamps/ be a source/ interesting facts/ important dates/ every country/ the world. 4. It/ make stamp collecting/ become very popular. 5. As you look at the pages/ a stamp album, you/ can learn interesting details/ foreign customs/ arts/ literature/ history/ culture. 6. Their colors/ can make/ you feel relaxed/ happy. 7. Collecting stamps/ can become/ a business. 8. If you are lucky/ finding/ special stamp, it/ will bring/ you some money besides knowledge/ pleasure.
viết đoạn văn với chủ đề : So sánh nhận xét cách miêu tả nhân vật trong đoạn trích chị em thúy kiều MÌNH ĐANG CẦN GẤP
cần đáp án thôi nha......................
Chào ae Làm hộ mình, mình cũng có nick ở đây nhưng lost pass rồi Cho $a,b,c>0$ và $a+b+c=1$.Tìm GTLN $ P=a+\sqrt{ab}+\sqrt[3]{abc}$
Giúp mik vớiii!Cần gấp!!!!!!!!!!!!!!!!!
Cho tam giác ABC. Gọi E, F là trung điểm của AB, AC. a)Chứng minh EF là đường trung bình của tam giác ABC. b) Cho EF = 5cm. tính BC
Ai có thể giúp em làm 3 bài này đc ko em đang gấp bởi vì 2 tiếng nữa phải nộp bài ạ !!!!!!!
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