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Peyton is a sprinter who can run the 40 yard dash in 4.5 seconds. He converts his speed into miles per hour, as shown below:
Which conversion factor is written incorrectly to convert his speed to miles per hour?
40 yd/4.5 sec
3ft/1yd
5280ft/1 mile
60sec/1min
60min/1 hour

Respuesta :

dannydgp69
It’s 40yd because if you multiply 10 times 4 equals 40 and it’s 4.5 half
homadison4

Answer:

[tex]\frac{5280 ft}{1 mi}[/tex]

Step-by-step explanation:

The ratio [tex]\frac{5280 ft}{1mi}[/tex] is incorrectly written because it is missing missing the ft unit.  For a conversion equation to be right, each units should be able to cancel each other out.  The factor should be [tex]\frac{1 min}{5280 ft}[/tex] .

The correct conversion is:

[tex]\frac{40 yd}{ 4.5 sec} * \frac{3 ft}{1 yd} * \frac{1 mi}{5280 ft}* \frac{60 sec}{1 min} * \frac{60 min}{1 hr}[/tex]  

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