展开全部

题目列表

题目内容
Year after year, officials offer apparently ____________ promises, so as to muster public support for ambitious engineering projects, but reality arrives years later in the form of outlandish expenditures and systems that fail to perform as promised.
According to the passage, the relative sizes of lizards at different altitudes represented a "puzzle" because they contradicted an assumption about how
Which of the following best describes the overall organization of the passage?
It can be inferred from the passage that the Chinese emperor and the bureaucracy differed with respect to the
The author mentions late imperial China's "huge tax base" primarily in order to
In an appliance store, the ratio of the number of radios in stock to the number of television sets in stock is 0.4. Exactly 10 radios and $$x$$ television sets are added to the appliances in stock, and the ratio of radios to television sets in stock remains at 0.4.

Quantity A

$$x$$

Quantity B

30


y is a positive even integer.

Quantity A

x+y

Quantity B

x+1


For all x, $$x^{2}+4x-12 = (x-r)(x+s)$$, where r > 0 and s > 0.

Quantity A

r

Quantity B

s


x and y are integers and 0 < x < y.

Quantity A

$$x^{y}$$

Quantity B

$$y^{x}$$




$$O$$ is the center of the circle, and $$OA=BC$$.

Quantity A

The measure of angle $$ABC$$

Quantity B

$$60°$$


List L: 84, 73, 87, 88, 75, 90

The standard deviation of the numbers in list L is s. List M consists of 6 different numbers, each of which is obtained by adding 9 to one of the numbers in list L. The standard deviation of the numbers in list M is t.

Quantity A

s+3

Quantity B

t


Two sides of a right triangle have lengths of 5 and 10, respectively.

Quantity A

The length of the third side of the triangle

Quantity B

11




$$\frac{(2+\frac{1}{2})^{4}-2^{4}}{(2+\frac{1}{2})^{2}+2^{2}}$$=
A ball is dropped onto a concrete floor from a height of 50 feet, after which it bounces n times. After each bounce, the ball rebounds to $$\frac{1}{3}$$ of the height from which it has just fallen. To what height does the ball rebound after the nth bounce?
If $$2x -3 = 5y+ 2,$$ then $$x- \frac{5}{2}y$$=
In the freshman class at College X, there are 400 students taking a certain French course and 500 students taking a certain English course. If 200 students in the freshman class are taking both the French course and the English course, how many students in the freshman class are taking the French course or the English course or both?
Sonia went on a 360-mile trip in her car. She drove the first 200 miles in 4 hours, stopped 45 minutes for lunch, and then drove the rest of the way at an average speed of 58 miles per hour. If the total time for the trip includes the lunch stop, what was the total time for the trip?

Give your answer to the nearest tenth of an hour.

_____hours


For how many of the categories shown was the dollar amount of the expenditures in 1995 less than $1 billion?

共收录:

25000 +道题目

269本备考书籍

最新提问