#### 题目列表

s, t, and u are integers, and 10 ≤ s < t < u ≤ 20

#### Quantity A

s+$\frac{t}{u}$

#### Quantity B

11

In square ABCD, point P is the midpoint of side BC and point Q is the midpoint of side AD. Point E (not shown) is located on line l and triangle BCE is equilateral.

The length of PQ

#### Quantity B

The length of PE

$z*10^{k} = 6*10^{m}$
m = k +2

z

#### Quantity B

60

A certain bag contains red balls, green balls, and blue balls and no other balls. The ratio of the number of red balls to the number of blue balls is 2:3, and the ratio of the number of blue balls to the number of green balls is 4:3. The number of blue balls in the bag is what fraction of the total number of balls in the bag?
For each of the last 5 years, the population of a colony of beetles increased by 8 percent of the preceding year`s population. If P represents the current population of the colony, which of the following best represents the population 5 years ago, in terms of P ?
Ben has 30 pencils in a box. Each of the pencils is one of 5 different colors, and there are 6 pencils of each color. If Ben selects pencils one at a time from the box without being able to see the pencils, what is the minimum number of pencils that he must select in order to ensure that he selects at least 2 pencils of each color?

Which of the following statements about triangle PQR shown in the xy-plane are true?

The table shows the percent distrbution of financial support for a nonprofit organization, by source. The amount of financial support from individuals is approximately what percent less than the amount from corporations?

Data sets X and Y each consist of 4 values, as shown in the table. If the range of dataset X is 21, what is the range of dataset Y?
Three different committees consistof 8, 10, and 13 people, respectively. If N is the total number of different people in the 3 committees combined, what is the 1east possible valueof N ?
If $\frac{17+m}{43+m}=\frac{2}{3}$,what is the value of m ?
For 1988, the typical travel time during the morning cormmuting hours was approximately what fraction of the typical travel time during the evening commuting hours?
The typical travel time during the morning commuting hours decreased by approximately what percent from 1986 to 1988?
During the morning commuting hours in 1987, what was the average speed, in miles per hour, of a car that traveled the 10 miles on Road H if the car took the typical amount of time to travel the 10 miles?
The legs of aright triangle are in the ratio of 3 to 1. If the length of the hypotenuse of the triangle is $\sqrt{40}$, then the perimeter of the triangle is between.
A certain class of 90 students took a typing proficiency test. The average (arithmetic mean) score of the students who passed the test was 84, and the average score of the students who failed the test was 60. If the average score of all students was 80, how many students passed the test?
Which of the following equals $8*(72)^{-5}$?
In the xy -plane, line l is parallel to the line y = 3x + 2. If line l passes through the point (1, -1), then line e passes through which of the following points?
Indicate all such points.

The center of the circleis O,and RS'= ST= 4. What is the lengthof arc RWT?
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