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OG19-语文分册 OG20-语文分册
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A major health insurance company in Lagolia pays for special procedures prescribed by physicians only if the procedure is first approved as "medically necessary" by a company-appointed review panel. The rule is intended to save the company the money it might otherwise spend on medically unnecessary procedures. The company has recently announced that in order to reduce its costs, it will abandon this rule.
Which of the following, if true, provides the strongest justification for the company's decision?
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OG19-语文分册 OG20-语文分册
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Which of the following most logically completes the market forecaster's argument?
Market forecaster: The price of pecans is high when pecans are comparatively scarce but drops sharply when pecans are abundant. Thus, in high-yield years, growers often store part of their crop in refrigerated warehouses until after the next year's harvest, hoping for higher prices then. Because of bad weather, this year's pecan crop will be very small. Nevertheless,
pecan prices this year will not be significantly higher than last year, since _________.
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OG19-语文分册 OG20-语文分册
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Which of the following most logically completes the argument below?
Within the earth's core, which is iron, pressure increases with depth. Because the temperature at which iron melts increases with pressure, the inner core is solid and the outer core is molten. Physicists can determine the melting temperature of iron at any given pressure and the pressure for any given depth in the earth. Therefore, the actual temperature at the boundary of the earth's outer and inner cores-the melting temperature of iron there-can be determined, since ______.
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OG19-语文分册 OG20-语文分册
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Which of the following, if true, would provide the most support for Castaneda's explanation of the "stereotypical plot" mentioned in the lines 18-19?
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OG19-数学分册
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A garden center sells a certain grass seed in 5-pound bags at $13.85 per bag, 10-pound bags at $20.43 per bag, and 25-pound bags at $32.25 per bag. If a customer is to buy at least 65 pounds of the grass seed, but no more than 80 pounds, what is the least possible cost of the grass seed that the customer will buy?
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OG19-数学分册
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Which of the following lines in the xy-plane does $$\underline {not}$$ contain any point with integers as both coordinates?
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OG19-数学分册
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A certain financial institution reported that its assets totaled $2,377,366.30 on a certain day. Of this amount, $31,724.54 was held in cash.Approximately what percent of the reported assets was held in cash on that day?
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OG19-数学分册
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$$3r \leq {4s+5}$$
$$| s | \leq 5$$
Given the inequalities above, which of the following CANNOT be the value of r ?
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OG19-数学分册
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A positive integer is divisible by 9 if and only if the sum of its digits is divisible by 9. If n is a positive integer, for which of the following values of k is $$25 \times 10^{n} + k \times 10^{2n}$$ divisible by 9?
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OG19-数学分册
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Last year members of a certain professional organization for teachers consisted of teachers from 49 different school districts, with an average (arithmetic mean) of 9.8 schools per district. Last year the average number of teachers at these schools who were members of the organization was 22. Which of the following is closest to the total number of members of the organization last year?
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OG19-数学分册
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If the average (arithmetic mean) of x, y, and z is 7x and $$ x\neq 0$$, what is the ratio of x to the sum of y and z?
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OG19-数学分册
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If a, b, and care constants, a> b > c, and $$x^{3} - x = (x - a)(x - b)(x - c)$$ for all numbers x, what is the value of b?
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OG19-数学分册
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$$17^{3}+17^{4}$$=
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OG19-数学分册
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In the xy-plane, the points (c,d), (c,-d), and (-c,-d) are three vertices of a certain square. If c < 0 and d > 0, which of the following points is in the same quadrant as the fourth vertex of the square?
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OG19-数学分册
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In the figure shown above, line segment QR has length 12, and rectangle MPQT is a square. If the area of rectangular region MPRS is 540, what is the area of rectangular region TQRS ?
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OG19-数学分册
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Andrew started saving at the beginning of the year and had saved $240 by the end of the year. He continued to save and by the end of 2 years had saved a total of $540. Which of the following is closest to the percent increase in the amount Andrew saved during the second year compared to the amount he saved during the first year?
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OG19-数学分册
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In a numerical table with 10 rows and 10 columns, each entry is either a 9 or a 10. If the number of 9s in the nth row is $$n - 1$$ for each n from 1 to 10, what is the average (arithmetic mean) of all the numbers in the table?
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OG19-数学分册
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A window is in the shape of a regular hexagon with each side of length 80 centimeters. If a diagonal through the center of the hexagon is w centimeters long, then w =
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OG19-数学分册
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When the figure above is cut along the solid lines, folded along the dashed lines, and taped along the solid lines, the result is a model of a geometric solid. This geometric solid consists of 2 pyramids, each with a square base that they share. What is the sum of the number of edges and the number of faces of this geometric solid?
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OG19-语文分册
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The passage suggests that the fact that ALH84001 has been on Earth for 13,000 years has been used by some scientists to support which of the following claims about ALH84001?
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