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某人用手表测火车的加速度,先测三分钟,火车行540米,隔三分钟后再测一分钟,火车行360米,若火车七分...某人用手表测火车的加速度,先测三分钟,火车行540米,隔三分钟后再测一分钟,火车行360米, 某人用手表估测火车的加速度,先观测3min,发现火车前进540m；隔3min后又观测1min,发现火车前进360m.设火车做匀加速直线运动,则该人估算出的火车的加速度为多少?【希望有完整的过程,带公式的 The only gift is a portion of your 解方程组(1)1/4X+7/4Y=2 (2)2(3Y-3)=6X+4 k为值时,方程组4x+3y=1,6x-3y=k的解满足x0? 谢霆锋有过英文歌吗?都是哪几首呢? 谢霆锋的英文歌有什么几首如题 英语翻译The Unicorn Song (Margie Adam)When I was growing upMy best friend was a unicorn,The others smiled at me and called me crazy.But I was not upsetBy knowing I did not conform,I always thought their seeing must be hazy.The unicorn and I would 英语翻译这是首很经典的英文老歌,请不要用翻译软件翻得狗屁不通,真的很感谢I was tired of my lady,we'd been together too long.Like a worn-out recording,of a favorite song.So while she lay there sleeping,I read the paper i 求这段英文翻译" Your confession remains to be my final pleading,　　But the only thing that’s here with me 　　is tic tac tic tac tic tac tic tac " 求翻译~I wanted to see how your final went and also if you are enjoying your holiday. 求翻译.Small beauty...I like your space song...Like your space of log...Like yo 解方程组:3(6x-10)+4(2y+1)=41,4（2x+5）-3（3y-1）=-22过程写清楚、 解方程组：3（6x-1）+4（2y+1）=41且4（2x+5）-3（3y-1）=-22 求分式方程：x分之x-3=3x分之2再减去3分之8的解. 当x 时,1减去x+8/3=3x x+3x=12.8方程 怎么求 已知角α的终边与5π/12角的终边关于x轴对称,且α∈[3π,5π],求α的值怎么算 若角α与角β的终边关于x轴对称,则α与β的关系是 英语翻译如果在两天之内 是一个韩国故事 讲的是古代两个少年放风筝 已知角α的终边与30°角的终边关于y轴对称,且α∈(﹣720°,720°),求α? my brother has got a chinese kite中文翻译 若角A的终边与角B的终边关于Y轴对称,则A与B的关系是______ 角α和β的终边关于 y轴对称,则α和β的关系为A.α+β=k*360°,k∈ZB.α+β=k*360°+180°,k∈Zc.α-β=k*360°+180°,k∈ZD.α-β=k*360°,k∈Z请说明理由, cos(180/11)cos(360/11)cos(540/11)cos(720/11)cos(900/11) the lazy song-bruno mars 歌词 Bruno Mars - The Lazy Song中英歌词 3x+4y=3,4x-3y=15加减消元法解方程组 The Song The Love歌词中文意思如题.是奎贤之歌 是否存在这样的整数a,使方程组{3x+4y=a 4x+3y=5}的解是一对非负数?如果存在,求出它的解,若不存在,请说明理由.是:是否存在这样的整数a，使方程组{3x+4y=a 4x+3y=4}的解是一对非负数？如果存在，求 是否存在这样的正数a,使方程组{3x+4=a,3x+4y=5}的解是一对非负数 heartful song罗马全文是什么