Respuesta :
Answer:
The cart’s speed in miles per hour is 14.2 miles per hour .
Option (B) is correct .
Step-by-step explanation:
As given
Rob measures his go-cart’s speed to be 250 inches per second.
As
[tex]1\ inch = \frac{1}{63360}\ miles[/tex]
[tex]1\ second = \frac{1}{3600}\ hours[/tex]
Now convert 250 inches per second into miles per hour .
[tex]250 inches\ per\ second = \frac{250\times \frac{1}{63360}}{\frac{1}{3600}}\ miles\ per\ hour[/tex]
[tex]250 inches\ per\ second = \frac{\frac{250}{63360}}{\frac{1}{3600}}\ miles\ per\ hour[/tex]
[tex]250 inches\ per\ second = \frac{250\times 3600}{63360}\ miles\ per\ hour[/tex]
[tex]250 inches\ per\ second = \frac{900000}{63360}\ miles\ per\ hour[/tex]
250 inches per second = 14.2(Approx) miles per hour.
Therefore the cart’s speed in miles per hour is 14.2 miles per hour .
Option (B) is correct .
