document.write( "Question 168932: The weight of an object varies inversely with the square of the distance from earth's center (3,960 miles). A man weighs 250 lbs on the surface of the earth. How much would he weigh in an airplane flying at 30,000 ft? \n" ); document.write( "
Algebra.Com's Answer #124548 by vleith(2983)\"\" \"About 
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Given that weogh vaores with square of distance from center. Given 250 pounds at 3960 miles.\r
\n" ); document.write( "\n" ); document.write( "\"W+=+C%2F%28D%5E2%29\" where W is weight, D is distance to center of earth in miles and C is some constant. \r
\n" ); document.write( "\n" ); document.write( "Let X be the weight in the airplane and Y be the distance from the center of the earth to the airplane.\r
\n" ); document.write( "\n" ); document.write( "\"Y+=+3960+%2B+30000%2F5280\" Need to convert 30000 feet into miles. 5280feet in a mile.
\n" ); document.write( "\"Y+=+3965.68\" miles\r
\n" ); document.write( "\n" ); document.write( "\"W%2AD%5E2+=+C\"
\n" ); document.write( "So
\n" ); document.write( "\"250%2A3960%5E2+=+X+%2A+3965.68%5E2\"
\n" ); document.write( "\"%28250%2A3960%5E2%29%2F%283965.68%5E2%29+=+X\"\r
\n" ); document.write( "\n" ); document.write( "You can crunch the numbers from here
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