发布时间:2023-03-29 05:01:31
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1、For all positive integers a and b, let (a|b)=(a-b)/(a+b) If m is a positive integer, what is (m|2m) ?(单选题)
A. -1/2
B. -1/3
C. 1/3
D. 1/2
E. 2
试题答案:B
2、 ______.(单选题)
A. 6(b-4)
B.
C.
D.
E. 6(b-2)
试题答案:D
3、At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended is 3:4. The ratio of the number of juniors who attended to the number of seniors who attended is 5:6. What is the ratio of the number of freshmen to the number of seniors who attended the basketball game?(单选题)
A. 5:8
B. 3:4
C. 3:5
D. 2:3
E. 1:3
试题答案:A
4、In a class of 160 seniors, the ratio of boys to girls is 3 to 5. In the junior class, the ratio of boys to girls is 3 to 2. When the two classes are combined, the ratio of boys to girls is 1 to 1. How many students are in the junior class?(单选题)
A. 400
B. 360
C. 200
D. 180
E. 160
试题答案:C
5、Which of the following describes one possible relationship between the values of
x and
y shown in the following table?
(单选题)
A. y varies directly as x
B. y varies inversely as x
C. y varies directly as the square of x
D. y varies inversely as the square of x
E. y varies directly as the square root of x
试题答案:D
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