Answered

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1.2.1The winner of a 100 mile race drove his car to victory at a rate of 143.8683 mph. What was his time to the nearest thousandth of an hour)?His time was hours.(Round to the nearest thousandth.)

Sagot :

In order to find the time spent in the race, we need to use the following formula:

[tex]\text{average speed}=\frac{\text{distance}}{\text{time}}[/tex]

If the distance of the race is 100 miles, and the average speed is 143.8683 mph, we have that:

[tex]\begin{gathered} 143.8683=\frac{100}{\text{time}} \\ 143.8683\cdot\text{time}=100 \\ \text{time}=\frac{100}{143.8683} \\ \text{time}=0.695 \end{gathered}[/tex]

So the time spent by the winner is 0.695 hours

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