# SOLUTION: 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:

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 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.] Answer by edjones(7569)   (Show Source): You can put this solution on YOUR website!20,000/5280=3.79 mi I drew a diagram on graph paper. I had the plane at x=0 y=3.79 at the start of decent and at x=-15 y=0 at the end. this gives us 2 points. (0,3.79) and (-15,0) slope= change in y/change in x=(3.79-0)/0-(-15)=3.79/15=.253 Ed