5272道题目5525 条题源记录 · 相同内容已合并
比・比例・速率与单位换算挑战
The area of a rectangular region is increasing at a rate of 280 square feet per hour. Which of the following is closest to this rate in square meters per minute? (Use 1 meter = 3.28 feet.)
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比・比例・速率与单位换算进阶
The ratio 12 to x is equivalent to the ratio 168 to y. Which expression represents y in terms of x?
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比・比例・速率与单位换算进阶
How many centimeters are equivalent to 47 meters?
(1 meter = 100 centimeters)
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比・比例・速率与单位换算进阶
The ratio of k to p is constant. If\( k=4 \) , then \( p=3 \) . What is the value of k when \( p=24 \)?
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比・比例・速率与单位换算挑战
An object's speed is increasing at a rate of 2.7 meters per second squared. What is this rate, in miles per minute squared, rounded to the nearest tenth? (Use 1 mile =1,609 meters.)
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比・比例・速率与单位换算进阶
The total mass, in kilograms, of r identical objects is t. Which expression represents the total mass, in kilograms, of 112r of these objects?
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比・比例・速率与单位换算进阶
An object moves at a speed of \( \frac{3}{17} \) feet per second. What is this speed in yards per second? (3 feet = 1 yard)
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比・比例・速率与单位换算挑战
The ratio of the base to the height of a triangle is 1 to 8. The base of the triangle is 104 centimeters. What is the height, in centimeters, of the triangle?
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比・比例・速率与单位换算挑战
One gallon of sealant costs $23 and will cover 250 square feet of a surface. A deck has a total surface area of d square feet. Which equation represents the cost c, in dollars, of the sealant needed to cover the deck twice?
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比・比例・速率与单位换算挑战
An object's speed is increasing at a rate of 5.70 meters per second squared. What is this rate, in miles per minute squared, rounded to the nearest tenth?
(Use 1 mile = 1,609 meters.)
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比・比例・速率与单位换算挑战
The area of a rectangular region is increasing at a rate of 270 square feet per hour. Which of the following is closest to this rate in square meters per minute? (Use 1 meter = 3.28 feet.)
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比・比例・速率与单位换算挑战
On average, a certain tree grows 87 centimeters every m months. At this rate, which expression represents the number of centimeters, on average, the tree grows every k years?
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