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:
[tex]Speed\=\ \frac{distance}{time}[/tex]
Therefore, with a little bit of arrangement, we get:
[tex]Time\=\ \frac{distance}{speed}[/tex]
So, let's get on with it.
[tex]Time\=\ \frac{643 \ miles}{65 \ mph}[/tex]
[tex]Time\=\ 9.9 \ hours [/tex]
Finally, we have our answer: 9.9 hours, rounded to the nearest tenth.
Hope this helped!
