document.write( "Question 167301: I hope you can help me. I just went back to school and I am having so much trouble with the math (I had to start college in the \"stupid math\" class, and I'm STILL having trouble!). Unfortunately my math professor is not very good at explaining things. He's very nice, but he's very old, and when he's putting a problem on the board, he sometimes gets confused and gets the wrong answer, which then confuses me even more! I need to know about unit multipliers. How do you know which measurement goes where (top or bottom of fraction)? I had a homework question (which I got wrong; I know the answer, but I still cannot find out how to get that answer. \r
\n" ); document.write( "\n" ); document.write( "Convert 44 feet per second to miles per hour. \r
\n" ); document.write( "\n" ); document.write( "The answer is 38 mph, but I have absolutely no idea how they came up with that answer. I've been working on this problem for over an hour. Thank you so much for your help.\r
\n" ); document.write( "\n" ); document.write( "DT
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Algebra.Com's Answer #123226 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
1 ft=(1/5280)mi
\n" ); document.write( "44 ft=(44/5280)mi
\n" ); document.write( "1 sec=(1/60)*(1/60)=(1/3600)hr
\n" ); document.write( "(1 sec=1/60 min and 1 min=1/60 hr, so 1 sec=1/3600 hr)
\n" ); document.write( "Now lets put it togethr
\n" ); document.write( "44 ft/sec=(44/5280)mi/(1/3600)hr
\n" ); document.write( "(44/5280)/(1/3600)=(multiply numerator and denominator by (3600/1) to get rid of the complex fraction:
\n" ); document.write( "(44/5280)*(3600/1)/(1/3600)*(3600/1) mi/hr=
\n" ); document.write( "(44*3600)/5280 mi/hr=
\n" ); document.write( "158400/5280 mi/hr= 30 mi/hr\r
\n" ); document.write( "\n" ); document.write( "CK my Math----I didn't come up with 38 mi/hr but hopefully you see the approach.
\n" ); document.write( "P.S. I think that 30 mi/hr is correct.\r
\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor\r
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