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
An object's average acceleration, in meters per second squared, is the change in the object's speed, in meters per second, divided by the time during which the change occurred, in seconds. A certain object's speed changes by 45 meters per second in 6 seconds. What is this object's average acceleration, in meters per second squared, during this time period?
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比・比例・速率与单位换算挑战
There is a proportional relationship between p and t. If p = 2,340 when t= 3,120, then what is the value of p when t = 2,496?
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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 4. The base of the triangle is 104 centimeters. What is the height, in centimeters, of the triangle?
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比・比例・速率与单位换算进阶
A sphere has a volume of 247.00 cubic yards. What is the volume of the sphere, in cubic meters? (Use 1 yard = 0.914 meter.)
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比・比例・速率与单位换算进阶
The ratio of the side length of square A to the side length of square B is 3 to 6. Square A has a side length of 23 inches. What is the side length, in inches, of square B?
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比・比例・速率与单位换算挑战
One gallon of paint will cover 310 square feet of a surface. A room has a total wall area of w square feet. Which equation represents the total amount of paint P, in gallons, needed to paint the walls of the room twice?
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比・比例・速率与单位换算进阶
How many centimeters are equivalent to 35 meters? (1 meter = 100 centimeters)
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比・比例・速率与单位换算进阶
A certain hybrid car uses 39 gallons of gasoline to travel 1,950 miles. At this rate, how many kilometers does the car travel using 39 gallons of gasoline? (Use 1 mile = 1.6 kilometers.)
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比・比例・速率与单位换算挑战
The bone mineral density of a certain person's thoracic spine was estimated to be 0.812 grams per square centimeter. What is this estimated bone mineral density in grams per square millimeter? (1 centimeter = 10 millimeters)
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比・比例・速率与单位换算进阶
A remotely operated vehicle (ROV) is used for underwater ocean research. When the ROV is at a depth of 26 fathoms, what is the ROV's depth in feet? (1 fathom = 6 feet)
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比・比例・速率与单位换算进阶
The ratio of cups of flour to cups of butter in a pie dough recipe is 2.75:1, and in a biscuit recipe is 7:1. Each recipe uses 1 cup of butter. How many more cups of flour are in the biscuit recipe than in the pie dough recipe?
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比・比例・速率与单位换算挑战
An object's speed, in meters per hour, is increasing at a rate of 1,530 meters per hour per second. Which of the following is closest to this rate in feet per second squared? (Use 1 meter =3.28 feet.)
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