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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 150 square feet per hour. Which of the following is closest to this rate in square meters per minute? (Use 1 meter = 3.28 feet.)
原库参考解析
比・比例・速率与单位换算进阶
What length, in meters, is equivalent to a length of 230 decimeters?
(1 meter = 10 decimeters)
原库参考解析
比・比例・速率与单位换算挑战
One gallon of paint will cover 280 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?
原库参考解析
比・比例・速率与单位换算挑战
The area of a rectangular region is increasing at a rate of 330 square feet per hour. Which of the following is closest to this rate in square meters per minute? (Use 1 meter = 3.28 feet.)
原库参考解析
比・比例・速率与单位换算进阶
A triathlon is a multisport race consisting of three different consecutive events. A triathlon participant plans to complete the cycling event with an average speed of 33,792 yards per hour. What is this average speed, in miles per hour? (1 mile = 1,760 yards)
参考答案
比・比例・速率与单位换算挑战
There is a proportional relationship between p and t. If \( p=2,310 \) when \( t=3,080 \), then what is the value of t when \( p=1,848 \)?
参考答案
比・比例・速率与单位换算进阶
There is a proportional relationship between p and t. If \( p=5,610 \) when \( t=7,480 \), then what is the value of t when \( p=4,488 \)?
参考答案
比・比例・速率与单位换算挑战
A container has a volume of 0.83 cubic meters. Which of the following is closest to this volume, in quarts?
(Note: 100.00 centimeters = 1 meter. Use 946.35 cubic centimeters = 1.00 quart.)
参考答案
比・比例・速率与单位换算进阶
During a physics experiment, the speed of an object was determined to be 177.0 inches per second. What is this speed in feet per second? (12 inches=1 foot)
参考答案
比・比例・速率与单位换算进阶
A region has a total area of 270 square feet. Within the region, there are n objects. Which expression represents the average number of objects per square foot within this region?
参考答案
比・比例・速率与单位换算挑战
An object’s speed is increasing at a rate of 6.4 meters per second squared. What is this rate, in miles per minute squared, rounded to the nearest tenth?
(Use 1 mile = 1,609 meters.)
(Use 1 mile = 1,609 meters.)
参考答案
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 27°F and the wind speed is 20 miles per hour (mph)? (Disregard the degree symbol when entering your answer.)
According to the table, what is the wind chill temperature, in degrees Fahrenheit (°F), when the air temperature is 27°F and the wind speed is 20 miles per hour (mph)? (Disregard the degree symbol when entering your answer.)
参考答案
