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题目内容
A bus traveled m miles in h hours at an average speed of r miles per hour. If the number of hours traveled by the bus had been 20 percent greater and the average speed had been 20 percent less, then the distance traveled by the bus would have been what percent less?

_____%


If the area of trapezoid ABCD above is 90, what is the length of side CD?


In the rectangular coordinate plane, how many points $$(x, y)$$, where both x and y are integers, lie on the circle with center at $$(0, 0)$$ and radius $$5$$?
For how many of the 10 selected years was the number of United States residents in the age-group "65 years and older" greater than 14 million?
Of the 10 selected years, which had the greatest total number of United States residents in the combined age groups of "5 years and younger" and "65 years and older"?
Of the following which best describes how the number of United States residents that were in the age-group"5 years and younger"changed from 1900 to 1940?
In a sequence of 700 integers, each term after the first two terms is the sum of the two preceding terms.

Which of the following could be the number of odd integers in the sequence?

Indicate all such numbers.

Quantity A

The number of prime numbers between 4 and 15

Quantity B

The number of prime numbers between 16 and 30
The average (arithmetic mean) of the 4 numbers a, b, c, and d is 1.

Quantity A

a+b

Quantity B

4-(c+d)
The average (arithmetic mean) weight of the boxes in a certain shipment is 18 pounds. Each of the boxes in the shipment weighs either 10 pounds or 20 pounds.

Quantity A

The number of 20-pound boxes in the shipment

Quantity B

8
k and m are positive numbers such that $$k=2m^{2}-32$$

Quantity A

$$\frac{k}{m+4}$$

Quantity B

2(m-4)
a < 0 and b ≠ 0

Quantity A

|$$b^{2}+a$$|

Quantity B

|$$a-b^{2}$$|
q, r, and s are nonzero numbers.

q > r+s

r < s

Quantity A

q

Quantity B

s


Quantity A

|a|

Quantity B

|b|
A flat rectangular garden has a diagonal that measures 10 feet. If the length of the garden is 3 times the width of the garden, which of the following is closest to the width of the garden, in feet?
In the xy-plane, line k passes through the point (1, 3). If the x-intercept is 2, which of the following is the equation of line k?

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