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【数学 刷题打卡团 -9927】
难度系数:5
213人已做
75%正确率
The weekly sales commission at Company X is 2 percent of the first $2,000 of weekly sales plus 15 percent of the weekly sales in excess of the first $2,000. The weekly sales commission at Company Y is 5 percent of the first $2,000 of weekly sales plus 10 percent of the weekly sales in excess of the first $2,000. In a given week, what is the amount of weekly sales at Company Y that would earn the same weekly sales commission as $5,000 in weekly sales at Company X?
【数学 刷题打卡团 -9926】
难度系数:5
166人已做
74%正确率
In a distribution of the values of the variable x, the 50th percentile is 48.5, and the 60th percentile is 56.5.
【数学 刷题打卡团 -9925】
难度系数:5
214人已做
73%正确率
In a distribution of 8,500 different measurements of the variable X, 26.5 is the 56th percentile and 37.1 is the 78th percentile. Which of the following is closest to the number of measurements of X that are in the distribution such that 26.5 ≤ X ≤ 37.1?
【数学 刷题打卡团 -9924】
难度系数:5
223人已做
83%正确率
At a certain elementary school, 10 percent of the fifth-grade students are members of the school band. If 12 percent of the fifth-grade boys and 8 percent of the fifth-grade girls are members of the band, what percent of the fifth-grade students at the school are boys?
【数学 刷题打卡团 -9923】
难度系数:5
231人已做
75%正确率
m and n are integers.
【数学 刷题打卡团 -9922】
难度系数:4
212人已做
75%正确率
If the perimeter of the isosceles right triangle shown is 1+√2, what is the area of the
【数学 刷题打卡团 -9921】
难度系数:4
219人已做
83%正确率
n is an integer greater than or equal to 5.
【数学 刷题打卡团 -9920】
难度系数:4
211人已做
71%正确率
4 < x < y < 8
【数学 刷题打卡团 -9919】
难度系数:3
196人已做
84%正确率
In 1998 the yearly expenses to run a certain small business were x dollars. In 1999 the yearly expenses to run the business increased by 10 percent of the 1998 yearly expenses. In 2000 the yearly expenses decreased by 5 percent of the 1999 yearly expenses.
【数学 刷题打卡团 -9918】
难度系数:3
193人已做
66%正确率
A certain band will perform 15 different songs in random order, and no song will be performed twice. If 9 of the songs are new, what is the probability that the first 2 songs that the band performs will both be new? Give your answer as a fraction.
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