展开全部

题目列表

题目内容
1 < x < 2

Quantity A

$$\frac{1}{x}$$+$$\frac{2}{x}$$+ $$\frac{3}{x}$$

Quantity B

x +$$\frac{x}{2}$$+ $$\frac{x}{3}$$


The function h is defined by $$h(y)=y+\frac{1}{y}$$ for all positive numbers y.

Quantity A

h(h($$\frac{1}{9}$$))

Quantity B

10


In the xy- plane, the points P, Q, and S have coordinates (14, 10),(1, 0), and (6, 0), respectively. What is the area of triangular region PQS?
Brad and Paula were each given a copy of the same list of 20 songs, and they were asked to mark the songs that they liked. Brad marked 15 songs and Paula marked 12 songs. Which of the following CANNOT be the number of songs that they both marked?
Set R={-3, -2, -1, 0, 1, 2, 3}
Set T={-7, -6, -5, -4, -3, -2}
If an integer is to be randomly selected from set S and an integer is to be randomly selected from set R, what is the probability that the product of the two integers selected will be positive?
Give your answer as a fraction.
If $$-1 < y < 0$$, what is the relationship between $$y$$, $$y^{2}$$, $$y^{3}$$, and $$y^{4}$$?
a = $$3^{11}$$+$$3^{16}$$+$$3^{19}$$+$$3^{23}$$)?

What is the units digit of a?
n is a positive integer.

Quantity A

The remainder when 5($$10^{n}$$) + 1 is divided by 3

Quantity B

1


What is the greatest prime factor of 510?
What is the greatest prime divisor of $$3^{100}$$- $$3^{97}$$?
If $$s$$ and $$t$$ are different positive integers, which of the following guarantees that $$\frac{t}{s}$$ is an integer?

Indicate all such statements.
A certain factory has 8 identical machines that process a certain chemical product at the same constant rate. If it takes 40 hours for 5 of the machines, working simultaneously at their constant rate, to process a totaI of one ton of the product, how many hours does it take the 8 machines, working simultaneously at their constant rate, to process a total of one ton of the product?

_____hours

Quantity A

$$(2m+1)^{2}$$

Quantity B

$$(2(m+1))^{2}$$


Which of the following is equal to (6)($$14^{8}$$)+(15)($$14^{7}$$)?
If $$\sqrt{108}$$ =$$a\sqrt{b}$$, where $$a$$ and $$b$$ are both positive integers, which of the following could be the value of a+b?

Indicate all such numbers.
x> $$\sqrt{5}$$

Quantity A

3x

Quantity B

$$\sqrt{45}$$


n is an integer, and k is not an integer.

0 < k < n < k+2

Quantity A

n

Quantity B

k +1



PQ=QR=QS

Quantity A

PS

Quantity B

RS


The sequence $$a_{1},a_{2},a_{3}.....a_{n}$$....is defined by $$a_{1}=2$$, $$a_{2}$$=3, and $$a_{n}$$=$$(a_{n-1})(a_{n-2})$$ for all integers n greater than 2. What is the value of $$a_{8}$$?
A certain number of toys were packed into x boxes so that each box contained the same number of toys, with no toys left unpacked. If 3 fewer boxes had been used instead, then 12 toys would have been packed in each box, with 5 toys left unpacked. What is the value of x ?

共收录:

25000 +道题目

200本备考书籍

最新提问