quick math help on conversion please. Attachment inside

Question

anonymous · Answer

attachment

anonymous · Answer

my teacher gave it back to me wrong and i dont know what i did wrong and i need help with the units

danjs · Answer

Conversion prob... ill show you an easy way to do these types

danjs · Answer

First you start with what you are given, in this case 1126.4 in/s   
Then multiply that by ratios of 1 
In the right way so that the units cancel in your favor. ... here is the first step.

danjs · Answer

i see you tried to go directly from inches to miles, here is an easier way...

danjs · Answer

|dw:1420514751695:dw|

danjs · Answer

Those are all fractions, the vertical line means multiply, the horizontal line is divide

danjs · Answer

Notice cancellation of the units in your favor....

danjs · Answer

|dw:1420514912849:dw|

danjs · Answer

Take what you are given , 1126.4 inches per 1 second, then multiply that fraction by other fractions that =1, like 12 inches per 1 foot, so that the units all cancel the way you need them to.