展开全部

题目列表

题目内容

R and r are two radii of the greater and smaller circle, respectively. What is the ratio of minor arc AB to minor arc DF?
Give your answer using R and r.

An isosceles triangle is inscribed in a circle, and the base is the diameter of the circle whose radius is 5. What is the area of the shaded area?

If the sum of the area of the three semi-circles is 48π, what is the length of AB?

In the xy-plane, the shaded area above is composed by three semi-circles. What is the area of the shaded area?
x and y are positive decimals such that x+y rounded to the nearest hundredth is x.

Quantity A

y

Quantity B

0.007


For which of the following values of x does the expression $$\sqrt{\frac{24}{x+1}}$$ represent an irrational number?

Indicate all such numbers.

The three arcs are semicircles.

Quantity A

The area of the shaded region

Quantity B

The sum of the areas of the two unshaded semicircular regions



OC is the diameter of the smaller circle, but the radius of the larger circle. O is the center of the larger circle.

Quantity A

The area of the blue region

Quantity B

The sum of the yellow region




Quantity A

-x

Quantity B

-y


On a number line, Point P lies between -3 and -2, Point Q lies between -1 and 0, while Point R lies between 0 and 1.

Quantity A: The distance between point P and point Q

Quantity B: The distance between point Q and point R
How many distinct solutions does the equation |1-|x-215||=1 have?
x≠0, y≠0

|x|+|y|=|x+y|

Which of the following statements must be true?

Indicate all such statements.
|2+k|=|2-k|

Quantity A: k

Quantity B: 0

Quantity A

|$$3+x-x^{2}$$|

Quantity B

|$$x^{2}-x-3$$|


How many x can satisfy the equation | $$x^{2}$$-5x |=1?
f(x)=|x+2|, where -3≤x≤-2, what could be the value of f(x)?

Indicate all such numbers.
If 12% of all books in a library are reference books, then what is the closest ratio of the number of reference books to that of non-reference books?

Quantity A

The number of tenths equal to 1.4

Quantity B

The number of hundredths equal to 1.3


At first, water accounts for $$\frac{2}{5}$$ of a barrel. Later, 40 gallons of water is removed from the barrel, then the water left only accounts for $$\frac{2}{11}$$ of the barrel. Therefore, how many gallons of water is still needed to fill the barrel?
70% of the employees in a company is lawyer, and 55% of the employees are female. 60% of all the females are lawyer. what is the ratio of male lawyer to all the employees in the company?

Give your answer as a percent.

共收录:

25000 +道题目

200本备考书籍

最新提问