5272道题目5525 条题源记录 · 相同内容已合并
比・比例・速率与单位换算进阶
The ratio of green tiles to blue tiles in a piece of artwork is 5 to 2. If there are 16 blue tiles in the piece of artwork, how many green tiles are there?
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比・比例・速率与单位换算挑战
The speed of a white-throated needletail, a type of bird, in flight was measured to be 49 miles per hour. What was the white-throated needletail's measured speed, in kilometers per hour? (Use 1 mile = 1.6 kilometers.)
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比・比例・速率与单位换算进阶
During a trip, Bill drove his car for 16.0 miles and then began driving at a constant speed of 60.0 miles per hour. After 2 hours of driving at this speed, what is the total distance, in miles, Bill has traveled during this trip?
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比・比例・速率与单位换算挑战
A certain park has an area of 4,860,000 square meters. What is the area, in square kilometers, of this park ? (1 kilometer = 1,000 meters)
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比・比例・速率与单位换算挑战
An object has a mass of 308 grams and a volume of 28 cubic centimeters. What is the density, in grams per cubic centimeter, of the object?
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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 1,560 square centimeters per hour. What is this rate, in square meters per minute? (1 meter =100 centimeters)
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比・比例・速率与单位换算进阶
On average, a certain tree grows 39 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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比・比例・速率与单位换算挑战
An object's speed is increasing at a rate of 4.9 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
A certain dove species can fly at an average speed of 16 meters per second when in continuous flight. At this rate, how many meters would this dove species fly in 3 seconds?
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比・比例・速率与单位换算进阶
How many centimeters are equivalent to 24 meters? (1 meter =100 centimeters)
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比・比例・速率与单位换算进阶
A signal from a satellite in space travels to the surface of Earth at the speed of light. The signal takes 0.1473 seconds to reach the surface of Earth. What is the approximate distance, in kilomelers, from the satellite to the surface of Earth? (Nate: Use 2.998\( \times \)108 meters/ second for the speed of light. 1,000 meters = 1 kilometer)
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比・比例・速率与单位换算进阶
For certain air temperatures, the table gives wind chill temperatures for two different wind speeds.
According to the table, what is the wind chill temperature, in degrees Fahrenheit (°F ), when the air temperature is 41 °F and the wind speed is 45 miles per hour (mph)? (Disregard the degree symbol when entering your answer.)
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