2/12×14＋2/14×16＋2/16×18＋2/18×20＋1/20怎麼簡算

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• 1. 負5,8，負11,14，負17,20…第n個數為
• 2. 5,8,11,14,17,20.第100個數是幾，第n個數是幾
• 3. 1/2*5+1/5*8+1/8*11+1/11*14+1/14*17
• 4. 3,7,15,31,63，（），255有什麼規律？
• 5. 笑笑家的廚房長4米寬3米，現在準備鋪地磚.下麵有兩種規格地磚，選擇哪種地磚最省錢，並省多少錢？
• 6. 由方程y=3x-ln（x+y）+siny所確定隱函數y=y（x）的導數y'
• 7. 有兩個相同大小的正方形，長16釐米，寬8釐米，⑴拼成一個正方形，它的周長是多少？面積是多少？⑵拼成一… 有兩個相同大小的正方形，長16釐米，寬8釐米，⑴拼成一個正方形，它的周長是多少？面積是多少？⑵拼成一個長方形，它的周長是多少？面積是多少？
• 8. 已知函數f（x）=2cos〔（派/3）-（x/2）〕若x在（－派，派）之間，求f（x）的最大最小值
• 9. 如圖一個大長方形是由7個相同的小正方形拼成的以知大長方形的周長是34釐米 求小長方形的長和寬
• 10. 問一下，0可以開根號嗎？
• 11. -99又12/11*（+7）簡算 -99又12/11*（+7） 這一題簡算，一道有理數乘法
• 12. 英語翻譯鄰居們向警方投訴那家商店的吵鬧聲（COMPLAIN）
• 13. 英語翻譯 說的是一本書，名字叫吵鬧的鄰居
• 14. 英語翻譯 是全文翻譯。（抱歉沒有更多的了）
• 15. 永遠的17歲英文怎麼翻譯
• 16. 英語翻譯 Johnta Austin - 17 Minutes（Unreleased Rmx） Maximal r&b - The Freshest & Hottest R&B/ Hip-Hop Music！ 17 minutes 17 minutes 17 minutes 17 minutes 17 minutes thats all its been， But it feels like a lifetime has passed me by The room keeps spinnin even though Im still sittin And my heart just caught fire And with every tear，the flames keep on growin And my soul is melting down Its been 17 minutes since my life started over without you（over without you） And my pride tries to lie，but my hearts too empty without you（empty without you） Dont want the world，just want the life That I had 18 minutes ago But all I got is 17 minutes Yeah all I got is 17 minutes 17 minutes，I keep pretending this is all a bad dream And you will be waiting，for me to wake up So we can get back to the business of you loving me But Im afraid it aint so，and Im here alone And this is my reality Its been 17 minutes since my life started over without you（over without you） And my pride tries to lie，but my hearts too empty without you（empty without you） Dont want the world，just want the life That I had 18 minutes ago But all I got is 17 minutes，and thats all my eyes can see 17 minutes，the clock keeps ticking without you 17 minutes，life is getting away from me 17 minutes，how will I feel the 16,15,14,13 Its been 17 minutes since my life started over without you（over without you） And my pride tries to lie，but my hearts too empty without you（empty without you） Dont want the world，just want the life That I had 18 minutes ago But all I got is 17 minutes Yeah all I got is 17 minutes（Oooh） But all I got is 17 minutes
• 17. 英語翻譯 I finished my cooking course in a college at the age of 21.I thought I was going to become a world famous cook.I hoped people would travel from all over the world just to get a taste of myfood.Butthree months later，I knew I was wrong .Since nobody was traveling to taste my food，I decided I should travel to taste theirs. during my travel，I visited many different countries，such as Japan and France，where different kinds of food opened my eyes.I especially loved the experienced in Italy and China.
• 18. 英語English（12 19:47:27） “無論我媽媽得走多遠，她都不在乎”的英文 摸起來硬硬的 聞起來噁心的 嘗起來美味可口的 變質 變得越來越髒 核實 現實 的英文
• 19. 英語介詞填空（17 21:14:0） It's easier to climb up the hill than to climb ____the hill My mother asks me ____my life in Canada in her letter
• 20. 英語填介詞（30 19:23:17） We have a ten-minute break-------------classes