|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
Which of the following lines in the xy-plane does $$\underline {not}$$ contain any point with integers as both coordinates?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
$$3r \leq {4s+5}$$
$$| s | \leq 5$$
Given the inequalities above, which of the following CANNOT be the value of r ?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
$$17^{3}+17^{4}$$=
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
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 ?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
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?
|
|
OG19-数学分册
|
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 =
|
|
OG19-数学分册
|
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?
|
|
OG19-语文分册
|
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?
|
|
|
Exactly when in the early modern era Native Americans began exchanging animal furs with Europeans for European-made goods is uncertain. What is fairly certain, even though they left no written evidence of having done so, is that the first Europeans to conduct such trade during the modern period were fishing crews working the waters around Newfoundland. Archaeologists had noticed that sixteenth-century Native American sites were strewn with iron bolts and metal pins. Only later, upon reading Nicolas Denys's 16 72 account of seventeenth-century European settlements in North America, did archaeologists realize that sixteenth-century European fishing crews had dismantled and exchanged parts of their ships for furs. By the time Europeans sailing the Atlantic coast of North America first documented the fur trade, it was apparently well underway. The first to record such trade-the captain of a Portuguese vessel sailing from Newfoundland in 1501-observed that a Native American aboard the ship wore Venetian silver earrings. Another early chronicler noted in 1524 that Native Americans living along the coast of what is now New England had become selective about European trade goods: they accepted only knives, fishhooks, and sharp metal. By the time Cartier sailed the Saint Lawrence River ten years later, Native Americans had traded with Europeans for more than thirty years, perhaps half a century.
|
|
OG19-数学分册
|
[img]https://img.kmf.com/kaomanfen/img/gmat/QQ图片20190406001500.png[img]
In the figure shown, quadrilateral ABCD is inscribed in a circle of radius 5. What is the perimeter of quadrilateral ABCD?
(1) The length of AB is 6 and the length of CD is 8.
(2) AC is a diameter of the circle.
|
|
OG19-数学分册
|
lf $$y\neq0$$,is $$|x|=1$$?
(1) $$x = \frac{y}{|y|}$$
(2) $$|x|=-x$$
|
|
OG19-数学分册
|
During a certain bicycle ride, was Sherry's average speed faster than 24 kilometers per hour? (1 kilometer= 1,000 meters)
(1) Sherry's average speed during the bicycle ride was faster than 7 meters per second.
(2) Sherry's average speed during the bicycle ride was slower than 8 meters per second.
|