document.write( "Question 98167: An airplane covered 15 miles of its route while decreasing its altitude by 20,000 feet. Find the slope of the airplane's line of descent. Round to the nearest hundredth. [Hint: 1 mi = 5280 feet.]
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Algebra.Com's Answer #72305 by edjones(8007)\"\" \"About 
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20,000/5280=3.79 mi
\n" ); document.write( "I drew a diagram on graph paper.
\n" ); document.write( "I had the plane at x=0 y=3.79 at the start of decent and at x=-15 y=0 at the end.
\n" ); document.write( "this gives us 2 points. (0,3.79) and (-15,0)
\n" ); document.write( "slope= change in y/change in x=(3.79-0)/0-(-15)=3.79/15=.253
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\n" ); document.write( "\"graph%28500%2C500%2C-20%2C20%2C-20%2C20%2C.253x%2B3.795%29\"
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