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Which of the following is closest to the value of mergers and acquisitions for the oil and gas industry in the first quarter of 2001?
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S is the set of all numbers $$(k-n)^{2}$$, where k and n are integers such that 4 ≤ k < 7 < n ≤ 12. What is the range of the numbers in S?
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A certain spacecraft has 2 separate computer systems, x and Y, each of which functions independently of the other. The probabilities that systems x and Y will function correctly at liftoff are 0.90 and 0.99, respectively. What is the probability that at least one system will function correctly at liftoff?
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If a set S has a total of 6 subsets that consist of 2 members each, then s consists of how many members?
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The number of children in a certain family is a prime number less than 10. The number of boys in the family is greater than the number of girls, and the number ofboys is a prime number. If at least 1 of the children in the family is a girl, which ofthe following could be the number of boys in the family?
Indicate all such numbers.
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x and y are positive integers
$$x^{2}$$+$$y^{2}$$=89
xy=40
Quantity A:|x-y|
Quantity B:3
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The average (arithmetic mean) of 20 numbers is 53. When one of the numbers is discarded, the average (arithmetic mean) of the remaining numbers is 54.
Quantity A:The discarded number
Quantity B:50
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d≠0
Quantity A:The area of a square region with sides of length d
Quantity B:The area of a circular region with diameter d
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Quantity A：RS
Quantity B：TU
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a is a positive integer.[br/\
x is the remainder when 15a is divided by 6
Quantity A:x
Quantity B:2
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Thirty percent of the members of Group G are also members of Group H. Twenty percent of the members of Group H are also members of Group G.
Quantity A:The total number of members of Group G
Quantity B:The total number of members of Group H
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5(x-y+20)=y+100
y≠0
Quantity A:$$\frac{x}{y}$$
Quantity B:1
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n is a negative integer, and ab=1
Quantity A:$$a^{n}$$
Quantity B:$$b^{n}$$
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If k, n and p are consecutive positive even integers and k < n < p, which of the following must be an integer?
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In a certain club, 40 percent of the members are less than 25 years old and 66 percent of the members are less than 35 years old. Approximately what fraction of the members of the club are at least 25 years old but less than 35 years old?
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On a trip, Marie drove the first half of the distance at an average speed of 30 miles per hour for a total of 13 hours of driving, and Juanita will drive the second half of the trip. They scheduled t hours driving for the entire distance. If they are to arrive exactly on schedule, at what average speed must Juanita drive the second half of the distance?
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In the rectangular coordinate system, a certain line has slope 3. Which of the following pairs of points could be on the line?
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As a part of an environmental study of a river, a random sample of trout was drawn from the river and the lengths of the trout were recorded. The average (arithmetic mean) length was 14.31 inches. If a length of 16.89 inches was 1.50 standard deviations above the average, what was the standard deviation of the lengths of the trout in the sample?
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For which of the age-groups is the ratio of the number of full professors to the number of associate professors the greatest?
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