document.write( "Question 1053161: The speed of sound in dry air at 20 degrees Celsius (68 degrees Fahrenheit) is 768 mph. Convert to feet per second. \n" ); document.write( "
Algebra.Com's Answer #668410 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "One mile per hour is 5280 feet per 3600 seconds. So . You can do your own arithmetic.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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