题目列表

题目内容


What was the percent increase in daily round-trip commute time for City E from 1995 to 2005?


Of the commuters in the sample from City B in 2000, $$\frac{1}{3}$$ commuted by train, If the daily round-trip commute time for those in the sample who did not commute by train was 90 minutes, what was the daily round-trip commute time, in minutes, for those in the sample by train?
Let x, y, and z be positive numbers. If x is 12.5 percent of y and x is 3.125 percent of z, then x is what percent of y+z?

_____%
How many values of x are there such that x and y are integers, x > y > 1, and xy=200?
In the xy -plane, ten points are selected from the line with equation y = 0.8x - 24. If the range of the y coordinates of the ten points is 7, what is the range of the x-coordinates of the ten points?
The distance from the center of tree A to the center of tree B is 20 feet. The distance from the center of tree A to the center of tree C is 12 feet. The centers of the three trees are not, in a straight line. Which of the following values could be the distance, in feet, from the center of tree B to the center of tree C?

Indicate all such values,

Quantity A

$$(\frac{1}{2})^{-1}$$

Quantity B

$$(-2)^{-1}$$


Ann, Bob, and Celia work al Company C. Bob earns $15,000 more than Ann, and Celia earns $16,000 more than Bob.

Quantity A

The median of Ann, Bob, and Celia's earnings

Quantity B

The average(arithmetic mean) of Ann, Bob, and Celia 's earnings


x is an integer.

x-5 > -8

2x+5 <3

Quantity A

x

Quantity B

-2




O is the center of the semicircle.

Quantity A

The perimeter of △ABO

Quantity B

The length of arc BCD


Quantity A

The least positive integer by which 4,500 can be multiplied so that the resulting product is the cube of an integer.

Quantity B

6






$$3x+2y=8$$

$$x$$ and $$y$$ are integers and $$x \gt y$$.

Quantity A

3x+4y

Quantity B

8






On the number line, Z is the midpoint of line segment XY.

Quantity A

The coordinate of Z

Quantity B

2.3


x ≠ y and y ≠ 0

Quantity A

$$\frac{x+y}{y}$$

Quantity B

$$\frac{x^{2}-y^{2}}{xy-y^{2}}$$


Quantity A

The remainder when 754,975,376 is divided by 4

Quantity B

The remainder when 701,864,294 is divided by 4


The operation ▽ is defined by a▽b=$$b^{a}$$ for all nonzero integers a and b.

k is a nonzero integer.

Quantity A

(2▽1)▽k

Quantity B

k▽(4▽1)


List M: r+3, r+2, r+1, r, r-1, r-2, r-3

Quantity A

The standard deviation of the numbers in list M

Quantity B

r




Quantity A

x

Quantity B

y


Suppose a, b, c are different integers, and the repeating decimal 0.abc=$$\frac{m}{n}$$, where 0 < m < n < 100, m and n are both integers, then

Quantity A

n

Quantity B

39


Jeremy bicycled a distance of 16 miles in x minutes. He averaged 15 miles per hour for the first 8 miles he bicycled.

Quantity A

The number of minutes he took to bicycle the last 8 miles

Quantity B

x-32


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