7月17GRE数学真题及答案

-本文为网络收集精选范文、公文、论文、和其他应用文档，如需本文，请下载-7月17GRE数学真题及答案本文从网络收集而来，上传到平台为了帮到更多的人，如果您需要使用本文档，请点击下载按钮下载本文档（有偿下载），另外祝您生活愉快，工作顺利，万事如意！7月17日的GRE考试已经结束了，同学们可以放松一下啦。出国留学网GRE栏目为大家提供7月17GRE数学真题及答案，希望大家都可以取得理想成绩哦!7月17GRE数学真题及答案数学部分直接计算题1. According to a tax rate formula for a certain year, the amount of tax owed by an individual whose annual income was between $31,850 and $77,100 was equal to a base tax of $4,386 plus 24 percent of the annual income that exceeded $31,850. According to this formula, what was the amount of tax owed by an individual whose annual income that year was $42,000?答案：6822解析：题干问，某一年个人收入在$31,850到$77,100之间的税收计算方式为$4,386加上超出$31,850部分的24%。问收入为$42,000的个人这一年需缴纳多少税?所以我们可以得到所缴税的计算方式=4386+24%*(42000-31850)=6822.大小比较题2. x=2, y=3,z=5Quantity A: x1*y*z2Quantity B: (y/xz)A. Quantity A is GREater.B. Quantity B is greater.C. The two quantities are equalD. The relationship cannot be determined from the information given.答案：A解析：A的值= x1 * y * z2=1/2*3* 1/25=3/50B的值= =(y/xz)=9/100因为A=,而B=，所以AB.3. x XFrequency06111218323415The table shows the frequency distribution of the random variable X. What is the median of the distribution of the values of X ?A. B. C. D. E 答案：E解析：题干要求变量X值的中位数，表格左侧为数值，右侧为出现次数。因为总的次数=73，所以中位数是第37位，则落在数值3上。本文从网络收集而来，上传到平台为了帮到更多的人，如果您需要使用本文档，请点击下载按钮