题目列表

题目内容

Quantity A

$$(4x)(3(-2x+1))$$

Quantity B

$$(4)(3x)(1-2x)$$


$$m^{2}n^{4}$$=$$\frac{1}{16}$$

Quantity A

$$n^{2}$$

Quantity B

4m


$$x-y \gt x$$ and $$x+y \lt y$$

Quantity A

$$x$$

Quantity B

$$y$$


x > 0, y < 0

Quantity A

x+y-1

Quantity B

x-y+1


0 < a < b < c < 1

x=$$\frac{\frac{a}{c}}{\frac{1}{b}}$$ and y=$$\frac{\frac{c}{b}}{a}$$

Quantity A

x

Quantity B

y


r > 0

Quantity A

The area of a circular region with radius $$r$$

Quantity B

The area of a circular region with radius $$r^{2}$$


x is a positive integer.

Quantity A

$$5^{-x}$$

Quantity B

1


Quantity A

The number of positive even integers less than 100, each of which is the square of an integer

Quantity B

The number of positive odd integers less than 100, each of which is the square of an integer


The retail price of each item in a certain store consists of the cost of the item, a profit that is 10 percent of the cost, and an overhead that is 30 percent of the cost. If an item in the store has a retail price of $21, what is the cost of the item?
A storage facility rents units of two sizes, small and large. Each small unit has a capacity of 800 cubic feet and a monthly rental fee of $95. Each large unit has a capacity of 2,000 cubic feet and a monthly rental fee of $200. The total of the capacities of all the units is 98,400 cubic feet. For a month in which all the units are rented, the total of the monthly rental fees for all the units is $10,560. What is the total number of units that the storage facility has?

Quantity A

x

Quantity B

112


x=4+c

y=4x+c

The average (arithmetic mean) of x and y is 17.

Quantity A

c

Quantity B

3


$$l_{1}$$∥$$l_{2}$$



Quantity A

m

Quantity B

130


In a geometric sequence with 100 terms, the first term is positive and each term after the first term is equal to $$r$$ times the preceding term, where r > 2.

Quantity A

The sum of the first 99 terms of the sequence

Quantity B

The last term of the sequence


Let x and y be positive integers such that when y is divided by x, the remainder is 4, and when y+10 is divided by x, the remainder is 2. Which of the following must be an integer?
A right triangle has sides of length 2, 5, and $$x$$. A second right triangle has sides of length 4, 7, and $$y$$. A third right triangle has sides of length $$x$$, $$y$$, and $$n$$. Which of the following could be the value of $$n$$?
Which of the following points lie(s) inside the region expressed by $$y \geq -2x+1$$?

Indicate all such points?

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