急:提问几道GRE数学题1.A/x + A/y=1.In this formula,x and yrepresent the time needed for each of two workers to complete the job alone; Arepresents the time it takes for both x and y to complete the job workingtogether.So each fraction represen

几道GRE数学题 急:提问几道GRE数学题1.A/x + A/y=1.In this formula,x and yrepresent the time needed for each of two workers to complete the job alone; Arepresents the time it takes for both x and y to complete the job workingtogether.So each fraction represen 几道简单的GRE数学题1 two successive discounts of 20 percent and 40 percent are equivalent to a single discount of x percent. x 522 the number of ¼-inch lengths in a 4-inch length 一.括号部分提问.二.还有几道数学题不知道怎么列比例式方程1.I （take the bus 提问）to school.2.he bought (a book 提问) last week.3.she (watched tv 提问) yesterday.1.1/2X：3/8=1.22.3/8：X=1/3:1/103.10.5/X=0.5*0.7/4 几道GRE数学题1.In a series of races,10 toys cars are raced,2 cars at a time.If each car must race each of the other cars exactly twice,how many races must be held?2.The daily rate for a hotel room that sleeps 4 people is $39 for one person and x 提问几道GRE绿皮数学题P58The toll for a certain bridge is $0.15 or 1 token.Tokens are sold in packs of 40 for $4.00.The percenty save on 40 trips across the bridge if a token,rather than $0.15,is used to pay each toll与66又2/3比大小 答 提问几道GRE数学题P48A number between 5 and 10与A number between 8 and 14比大小 答案是不确定The number of different positive divisors of 12与the number of different positive divisors of 50比大小 P49x,y,z are positive integers,and 提问几道GRE数学题!都是绿皮上的,本人数学不大好,P275.39In how many of the integers between 1 and 100 does the digit 5 occur exactly once?答案是18,题目啥意思,如何做?P231.2A train travels 60 miles per hour for 3 hours and t 嗯、几道数学题哈.1.如果关于x的不等式（a-1)x 高一集合的几道数学题..请一定要帮忙..1.设A={x|-4 急!几道高中数学题,详细解释 急,几道简单的离散数学题, 求学霸,几道小学数学题,急 提问几道GRE数学!急!都是绿皮上的,本人数学不大好,请尽可能详细解释,谢谢!180.36If 2/3 of the number of women attending acertain dance is equal to 1/2 the number of men attending, what fraction ofthose attending are women?A.2 提问几道GRE数学题1.若自然数n被3除余2,被4除余1,问n被12除余几?52.2001年的元旦是星期六,问2002年的元旦是星期几?周日 用到同余理论?3．若自然数n是完全平方数,则根号下n也为n的一个因子,在n 初高中衔接的几道数学题1.已知函数f(x)=ax²+4x+bx(a 提问几道数学题.**** 要有答题过程、思路.答案我知道.1.方程组 3次√（x＋1）＋3次√（y-1）＝2 的解是（ ）.x＋y＝262.若对任何实数x不等式ax>b都成立,那么a、b的取值范围是____________.还有 一 几道有关集合的数学题. 谢谢一.求集合A,B的交集.1. A={X l 0