展开全部

题目列表

题目内容

Quantity A

$$(-87)^{8}$$

Quantity B

$$(\frac{1}{87})^{-8}$$


Which of the following could be the value of x to make sure that $$x^{3}$$-x is divisible by 10?

Indicate all such values.
The lengths of the two sides of the triangle are 1 and $$\sqrt{2}$$ respectively. What is the range of the length of the third side?
a=$$(-\frac{1}{37})^{12}$$, what is the value of $$37^{-12}$$?

Quantity A

$$\frac{111}{1111}$$

Quantity B

$$\frac{1111}{11111}$$


Three coins-two 10-cent coins and one 5-cent coin--are to be flipped simultaneously. For each of the three coins, the probability that the coin will land heads up is $$\frac{1}{2}$$. What is the probability that the total value of the coins that will land heads up is 15 cents?
Give your answer as a fraction.
Which of the following could be a factor of $$\frac{9!}{(6!*3!)}$$?

Indicate all such numbers.
What`s the units digit of the positive difference between $$32^{19}$$ and 32?
The speed of light is 3*$$10^{8}$$ meters per second, rounded to the nearest $$10^{8}$$ meters per second. A "light-hour" is the distance that light travels in an hour.

Quantity A

The number of kilometers in a light-hour

Quantity B

$$10^{10}$$


Of the following, which graph best represents a shaded region in which every point (x, y) satisties the inequality y ≤ |x|?
The mean and range of all the numbers in Set X is 200 and 100, respectively.

The mean and range of all the numbers in Set Y is 100 and 100, respectively.

Quantity A

The standard deviation of integers in set X

Quantity B

The standard deviation of integers in set Y


Quantity A

$$\frac{(5!+6!)}{(6!+7!)}$$

Quantity B

$$\frac{1}{6}$$


Three numbers are to be selected at random and without replacement from the five numbers 4, 5, 7, 8 and 11. What is the probability that the three numbers selected could be the lengths of the sides of a triangle?

Quantity A

x

Quantity B

112


$$l_{1}$$∥$$l_{2}$$



Quantity A

m

Quantity B

130


The remainder is 2 when y is divided by x.

The remainder is 4 when y+10 is divided by x.

Which of the following must be an integer?
Which of the following points lie(s) inside the region expressed by y≥-2x+1?

Indicate all such points?
From X to Z, A and B have different choices of routes. A goes directly from X to Z at an average speed of 20mile/h for 10 miles, while B starts first from X to Y at an average speed of 20mile/h for 7miles, and then from Y to Z at an average speed of 30mile/h for 4miles. What is the minimum minutes from X to Z between A and B?
In a store, $$\frac{2}{3}$$ of the employers take care of the customers and $$\frac{1}{5}$$ of the employers wash dishes. What is the proportion of employers who do not take care of the customers or wash dishes?
Which of the following is equal to $$x^{4}$$+2$$x^{2}y^{2}$$+9$$y^{4}$$?

共收录:

25000 +道题目

151本备考书籍

最新提问