Deka drives at an average speed of 17 miles per hour through traffic. What is her speed in kilometers per hour if 1 kilometer is approximately equal to 0.62 milles? Round to the nearest tenth of a kilometer. (1 point)
O 27.4
O 17.6
O 10.5
O 27
To convert miles per hour to kilometers per hour, we multiply the speed in miles per hour by the conversion factor of 1 kilometer is approximately equal to 0.62 miles.
So, Deka's speed in kilometers per hour is 17 miles per hour * 0.62 kilometers per mile = 10.54 kilometers per hour.
Rounding to the nearest tenth of a kilometer gives us an answer of 10.5 kilometers per hour.
Therefore, the correct answer is O 10.5.
To find Deka's speed in kilometers per hour, we need to convert miles per hour to kilometers per hour using the conversion factor:
1 kilometer ≈ 0.62 miles
The conversion can be done by multiplying the speed in miles per hour by the conversion factor:
Speed in kilometers per hour = 17 miles per hour * 0.62 kilometers per mile
Now, let's calculate the speed in kilometers per hour:
Speed in kilometers per hour = 17 * 0.62 ≈ 10.54
Rounding to the nearest tenth, Deka's speed in kilometers per hour is approximately 10.5 kilometers per hour.
Therefore, the correct answer is option O) 10.5.
To convert the speed from miles per hour to kilometers per hour, we can use the conversion factor of 1 kilometer being approximately equal to 0.62 miles.
First, we need to find the speed in miles per minute. We know that there are 60 minutes in an hour, so we can use that information to calculate the speed in miles per minute.
17 miles per hour can be expressed as:
17 miles / 1 hour = 17 miles/hour
To find the miles per minute, we divide the miles per hour by 60:
17 miles/hour / 60 minutes = 0.2833 miles/minute (rounded to four decimal places)
Now, we can convert the miles per minute to kilometers per minute using the conversion factor of 1 kilometer being approximately equal to 0.62 miles:
0.2833 miles/minute * 0.62 kilometers/mile = 0.1755 kilometers/minute (rounded to four decimal places)
Finally, to find the speed in kilometers per hour, we multiply the kilometers per minute by 60:
0.1755 kilometers/minute * 60 minutes = 10.53 kilometers/hour (rounded to two decimal places)
Therefore, Deka's speed in kilometers per hour, rounded to the nearest tenth of a kilometer, is 10.5 kilometers per hour.
The correct answer is option O: 10.5.