Question

type the correct answer in each box. use numerals instead of words. a race car is driven by a professional driver at 99 miles/hour. what is this speed in kilometers/hour and kilometers/minute? 1 mile = 1.61 kilometers 1 hour = 60 minutes round your answers to the nearest tenth. the speed is equivalent to \boxed{} kilometers/hour, or \boxed{} kilometers/minute.

Explanation:

Step1: Convert miles per hour to kilometers per hour

To convert miles per hour to kilometers per hour, we use the conversion factor \(1\) mile \( = 1.61\) kilometers. So, we multiply the speed in miles per hour by \(1.61\).
The speed is \(99\) miles per hour. So, the speed in kilometers per hour is \(99\times1.61\).
\[99\times1.61 = 159.39\]
Rounding to the nearest tenth, we get \(159.4\) kilometers per hour.

Step2: Convert kilometers per hour to kilometers per minute

We know that \(1\) hour \( = 60\) minutes. To convert kilometers per hour to kilometers per minute, we divide the speed in kilometers per hour by \(60\).
We have the speed in kilometers per hour as \(159.39\) (before rounding, to be more accurate). So, the speed in kilometers per minute is \(\frac{159.39}{60}\).
\[\frac{159.39}{60}=2.6565\]
Rounding to the nearest tenth, we get \(2.7\) kilometers per minute.

Answer:

The speed is equivalent to \(159.4\) \(\frac{\text{kilometers}}{\text{hour}}\), or \(2.7\) \(\frac{\text{kilometers}}{\text{minute}}\).