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
For a certain rectangle, the ratio of the width to the length is 1 to 2. If the width of the rectangle is 67 centimeters, what is the length, in centimeters, of the rectangle?
原库参考解析
比・比例・速率与单位换算进阶
The ratio 72 to m is equivalent to the ratio 4 to 24. What is the value of m?
原库参考解析
比・比例・速率与单位换算挑战
A figure has an area of 3,744 square inches. What is the area, in square feet, of this figure? (1 foot = 12 inches)
原库参考解析
比・比例・速率与单位换算进阶
An athlete swam a distance of 6,336 yards. How far did the athlete swim, in miles? (1 mile = 1,760 yards)
原库参考解析
比・比例・速率与单位换算挑战
Before liftoff, one of a space shuttle's solid rocket boosters contained 478,000 kilograms (kg) of propellant. Exactly 17 seconds after liftoff, 392,949 kg of this propellant remained. On average, approximately how much propellant, in kg, did this solid rocket booster burn each second after liftoff?
原库参考解析
比・比例・速率与单位换算进阶
The ratio a to b is equivalent to the ratio 49 to 26. What is the value of a when \( b=182 \)?
原库参考解析
比・比例・速率与单位换算基础
During an experiment, a particle's speed was 41 feet per second. What is this speed in feet per minute?
原库参考解析
比・比例・速率与单位换算挑战
The ratio x to y is equivalent to the ratio 4 to 7. If \( x=11t \) , what is the value of y in terms of t?
原库参考解析
比・比例・速率与单位换算进阶
A truck with a mass of 2,400 kilograms (kg) was first observed to travel 1,520 meters (m) in 60 seconds (s) at a constant speed. During a second observation an hour later, the same truck was observed to travel 1,170 m in 60 s at a constant speed in the same direction. What is the positive difference, in kg·m/s, between the truck's momentum during the first observation and the truck's momentum during the second observation?
原库参考解析
比・比例・速率与单位换算挑战
A figure has an area of 7,344 square inches. What is the area, in square feet, of this figure? (1 foot = 12 inches)
原库参考解析
比・比例・速率与单位换算进阶
One gallon of sealant costs $17 and will cover 450 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?
原库参考解析
比・比例・速率与单位换算挑战
An object’s speed is increasing at a rate of 12.60 meters per second squared. What is this rate, in miles per minute squared, rounded to the nearest tenth? Use 1 mile = 1,609 meters.
原库参考解析
