展开全部

题目列表

题目内容
A box manufacturer is designing a closed box in the shape of a rectangular solid. The ratio of the lengths of the sides of the box is 1 to 2 to 3. The total surface area of the box is 550 square inches. What is the volume of the box, in cubic inches?
$$(-0.5)^{-2}$$, $$(-0.5)^{-1}$$, $$(-0.5)^{0}$$, $$(-0.5)^{1}$$, $$(-0.5)^{2}$$,

What is the range of the 5 numbers listed?


The figure above shows a normal distribution with mean m and standard deviation d, including approximate percents of the distribution corresponding to the six regions shown.

The lengths of phone calls made on a certain weekend by students at High School H are approximately normally distributed with a mean of 30 minutes and a standard deviation of 10 minutes. Which of the following statements must be true?

Indicate all such statements.
During a 7-day period, a plant's height increased half as much each day as it did the day before. What is the ratio of the plant's increase in height on day 4 to its increase in height on day 7?
$$n$$ is an even integer greater than $$2$$.

Quantity A

$$\frac{n!}{(\frac{n}{2})!}$$

Quantity B

2($$\frac{n}{2}$$)!


In the distribution of heights in a group of a thousand people, height $$p$$ is at the 42nd percentile, height $$r$$ is at the 48th percentile, height $$s$$ is at the 54th percentile, and height $$t$$ is at the 60th percentile.

Quantity A

$$r-p$$

Quantity B

$$t-s$$




For all integers $$x$$ and $$y$$, the operation $$▽$$ is defined as $$x▽y=x$$ if $$xy$$ is even, and $$x▽y=-y$$ if $$xy$$ is odd. What is the value of $$(-57▽68)▽(-81)$$?
A box contains 100 purple balls, 100 red balls, and 100 white balls. What is the minimum number of balls that must be chosen to ensure that at least 4 of the balls chosen have the same color?
If $$-1 \lt x \lt 0$$ and $$1 \lt y \lt 2$$, which of the following statements must be true?
Set S={2, 4, 6}

Set T={2, 4, 6, 8, 10, 12}

How many different sets M, other than S and T, can be formed such that S is a subset of M and M is a subset of T?
The volume of a red container is $$3$$ times the volume of a green container. What fraction of the green container is equal to $$\frac{1}{12}$$ of the volume of the red container?
$$x^{-2}=4$$

Quantity A

|x|

Quantity B

$$x^{2}$$


At a constant rate of $$\frac{x}{6}$$ miles for every $$y$$ seconds, how many minutes would it take an aircraft to travel $$z$$ miles? ($$xyz \neq 0$$)


The solid shown above is composed of four identical solid cubes, each with sides of length 2. What is the surface area of the solid?
Given 14 consecutive integers, if the sum of the first 7 integers is S, what is the sum of the other 7 integers, in terms of S?
The five points (0, 2), (2, 3), (4, 2), (3, 4), and (5, 0) lie on the graph of the function y=f(x) in the xy -plane. What is the value of 3f(2)+1?
The probabilities that independent events A and B will occur tomorrow are 0.60 and 0.80, respectively.

Quantity A

The probability that A or B or both will occur tomorrow

Quantity B

0.92




In the $$xy$$-plane, ten points are selected from the line with equation $$y=0.8x-2.4$$. 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 median value for a sample of 7 numbers is 50.

The median value for a sample of 9 numbers is 52.

Quantity A

The median value for the combined sample of the 16 numbers

Quantity B

51




The median of the numbers in a list of consecutive positive multiples of 1.2 is 25.8. What is the greatest possible number in the list?

共收录:

25000 +道题目

269本备考书籍

最新提问