Question 73074
An airplane covered 22 miles of its route while decreasing its altitude by 25,000 feet. Find the slope of the airplane's line of descent. Round to the nearest hundredth. (1 mi-5280 feet).
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slope = (change in altitude)/(distance along the ground)
=[(-25000 ft)/(22 miles)]*[(1mi/5280 ft)]
=[-25000*1]/[22*5280]
= -25000/116160
= -0.21522 
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This is the same answer you have except for the negative.
Cheers,
Stan H.