Question

How many hours must you drive if you drive 643 miles at 65 mph on the interstate? Round to the nearest tenth hour

Answer 1

In order to drive 643 miles at 65 mph, I believe it would take 9.9 hours. (It is 9.8923 not rounded to the nearest tenth btw lol) I hope this is right! :)

Answer 2

Answer:

9.9 hours, rounded to the nearest tenth hour.

Step-by-step explanation:

To calculate the time of travel, we must first divide the distance by the speed. Why, you ask? Because of this equation:

$Speed\=\ \frac{distance}{time}$

Therefore, with a little bit of arrangement, we get:

$Time\=\ \frac{distance}{speed}$

So, let's get on with it.

$Time\=\ \frac{643 \ miles}{65 \ mph}$

$Time\=\ 9.9 \ hours$

Finally, we have our answer: 9.9 hours, rounded to the nearest tenth.

Hope this helped!