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1.5个人围着一个圆桌的5个位置坐,相对位置相同的坐法算1种,问有多少种不同的坐法?2.If L1的斜率 x是一个大于0小于1的小数,它的十分位上的数字是非零的吗?（1）16x是个整数（2）8x是个整数A.（1）充分,（2）不充分B.（2）充分,（1）不充分C.两个条件合起来才能解决D.两个条件均单独充分E. a2+b2-a2b2-4ab-1 原计划在雕塑周围用若干花盆未成一个4层的空心方阵,但是为了美观,最后决定将花 国庆节前夕街心雕塑的四周用204盆鲜花围成了一个每边三层的空心方阵,求最外面一层每边有鲜花多少盆? 国庆前夕在街中心雕塑的周围用204盆鲜花围成了一个每边三层的方阵求最外面一层每边有鲜花多少盆20 怎么解 学校用花盆摆一个三层空心方阵,最里层每边有14盆,摆这个方阵用多少 A certain quantity is measured on two different scales,the R -scale and the S-scale,that are related linearly.Measurement on the R-scale of 6 and 24 correspond to measurements on the s-scale of30 and 60 respectively.What measurement on the R-scale co GMAT Each of the integers from 0 to 9,inclusive,is written on a separate slip of blank paper and the ten slips are dropped into a hat.If the slips are then drawn one at a time without replacement,how many must be drawn to ensure that the numbers on t GMAT数学还难啊? Gmat数学难度 gmat数学疑问1、 in city x last April,was the average(arithmetic mean) daily high temperature greater than the median daily high temperature?(1) in city x last April,the sum of the 30 daily high temperature was 2,160°(2) in city x last April,60% 同义句Students should clean their classroom every day.The classroom __ __ __ __ students every day. 形容词作状语与现在分词有什么区别 小学五年级数学题,求过程,给好评 把主动语态改成被动态students must clean their classriom every day (x的平方+15x+20)(x的平方+13x+20) 因式分解 The students clean the windows every day(改为被动语态) 很害怕自己怀孕了懂得来告诉我好吗 现在分词做状语的问题— The woman biologist stayed in Africa studying wild animals for 13 years before she returned.在这里studying是现在分词做目的状语还是伴随状语啊,另外这里可以改成：The woman biologist stayed i a2b2-4ab+2=1-a2-b2求a+b 第三题的第三道 已知钝角a与5a的终边关于x轴对称,求角a The teacher told us the eighteenth and last lesson ______ quite easy.The teacher told us the eighteenth and last lesson ______ quite easy.A.is B.was C.are D.were 一台25英寸的电视机.它的体积约是【 】 伸出你的小拇指.它的体积有【 】 拿出你的橡皮擦.它的体积约是【 】 看看你的数学课本体积约有【 】【最好是小学课本】 1/4-1/5=1/18+1/6=1/2-1/8=7/11+5=1/3+1/4=2-1/3= 23 [ ] 【 】 1 4 [ ]___ =[ ]÷[ ] 7÷13= —— 4个 ____ 是1 17个____是【 】 —— 里面有4个------45 [ ] 【 】 19 61 [ ] 把下面的分数化成小数.【不能化成有限小数的 保留3位小数】31 2 7 4 5 11 23—— ____ ___ ____ ____ ___ ____100 25 30 9 6 50 20 X平方+（K+1）X+K是完全平方式,求K的值``怎么做啊`` 如果x的平方+3xy+k是一个完全平方式,则k的值是______ John Milton is Samson Agonistes.answer the question 帮忙翻译:The Annotated Milton encompasses the monumental sweep of John Milton's poetryThe Annotated Milton encompasses the monumental sweep of John Milton's poetry.这是一本介绍里的句子,主要不理解这里sweep什么意思