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OG18-数学分册
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Is x > y?(1) x + y > x - y(2) 3x > 2y
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OG18-数学分册
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Which of the positive numbers x or y is greater?(1) y = 2x (2) 2x + 5y =12
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OG18-数学分册
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If a and b are constants, what is the value of a?(1) a < b(2) (t - a )(t - b ) = $$t^{2} + t - 12$$, for all values of t
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OG19 OG20 OG2022
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The 10 students in a history class recently took an examination. What was the maximum score on the examination?
(1)The mean of the scores was 75,
(2)The standard deviation of the scores was 5.
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OG19 OG20 OG2022
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How many men are in a certain company's vanpool program?
(1)The ratio of men to women in the program is 3 to 2.
(2)The men and women in the program fill 6 vans.
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OG19 OG20 OG2022
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How many basic units of currency X are equivalent to 250 basic units of currency Y?
(1)100 basic units of currency X are equivalent to 625 basic units of currency Y.
(2)2,000 basic units of currency X are equivalent to 12, 500 basic units of currency Y
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OG19 OG20 OG2022
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What is the circumference of circle C?
(1)The radius of circle C is 2π
(2)The center of circle C is located at point (7, 8)in the xy-plane
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OG19 OG20 OG2022
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if a certain vase contains only roses and tulips, how many tulips are there in the vase?
(1 )The number of roses in the vase is 4 times the number of tulips in the vase .
(2)There is a total of 20 flowers in the vase.
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OG19 OG20 OG2022
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In a certain class, some students donated cans of food to a local food bank .What was the average(arithmetic mean)number of cans donated per student in the class?
(1) The students donated a total of 56 cans of food.
(2) The total number of cans donated was 40 greater than the total number of students in the class.
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OG19 OG20 OG2022
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Robin invested a total of $12,000 in two investments, X and Y, so that the investments earned the same amount of simple annual interest .How many dollars did Robin invest in investment Y ?(1) Investment X paid 3 percent simple annual interest, and investment Y paid 6 percent simple annual interest.(2) Robin invested more than $1,000 in investment X.
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OG19 OG20 OG2022
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What is the number of pages of a certain journal article?
(1)The size of each page is $$5\frac{1}{2}$$ inches by 8 inches.
(2)The average(arit metic mean)number of words per page is 250.
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OG19 OG20 OG2022
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Each of the n employees at a certain company has a different annual salary.What is the median of the annual salaries of the n employees?
(1)When the annual salaries of the n employees are listed in increasing order, the median is the 15th salary.
(2)The sum of the annual salaries of the n employees is $913, 500.
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OG19-数学分册
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ls 2x>2y?
(1) x > y
(2) 3x> 3y
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OG19-数学分册
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In each quarter of 1998, Company M earned more money than in the previous quarter, What was the range of Company M's quarterly earnings in 1998?
(1) In the 2nd and 3rd quarters of 1998, Company M earned $4.0 million and $4.6 million, respectively.
(2) In the 1st and 4th quarters of 1998, Company M earned $3.8 million and $4.9 million, respectively.
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OG19-数学分册
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Did Insurance Company K have more than $300 million in total net profits last year?
(1) Last year Company K paid out $0.95 in claims for every dollar of premiums collected.
(2) Last year Company K earned a total of $150 million in profits from the investment of accumulated surplus premiums from previous years.
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OG19-数学分册
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On the scale drawing of a certain house plan, if 1 centimeter represents x meters, what is the value of x ?
(1) A rectangular room that has a floor area of 12 square meters is represented by a region of area 48 square centimeters.
(2) The 15-meter length of the house is represented by a segment 30 centimeters long.
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OG19-数学分册
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Is k + m < O ?
(1) k < O
(2) km> O
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OG19-数学分册
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What is the value of $$2^{x}+2^{-x}$$?
(1) X > 0
(2) $$4^{x}+4^{-x}=23$$
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OG19-数学分册
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What is the ratio of c to d?
(1) The ratio of 3c to 3d is 3 to 4.
(2) The ratio of $$c + 3$$ to $$d + 3$$ is 4 to 5.
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OG19-数学分册
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If x is a positive integer, what is the value of x?
(1) $$x^{2} = \sqrt{x}$$
(2) $$\frac{n}{x} = n$$ and $$ n\neq 0$$.
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