SOLUTION: An airplane covered 9 miles of its route while decreasing its altitude by 36,000 feet. Find the slope of the airplane's line of descent. Round to the nearest hundredth. [Hint: 1

Question 92573: An airplane covered 9 miles of its route while decreasing its altitude by 36,000 feet. Find the slope of the airplane's line of descent. Round to the nearest hundredth. [Hint: 1 mi = 5280 feet.]
A) -0.55 B) -0.23 C) -0.76 D) � 0.11

Ok, I got an answer but I want to make sure that mine is correct.
Answer by bucky(2189) (Show Source): You can put this solution on YOUR website!
The answer is C
.
The vertical distance is a negative 36,000 feet which you need to divide by 5,280 ft to find
the number of miles of the descent. The result of this division is:
.

.
where the negative sign identifies the fact that the plane is dropping instead rising. The
altitude is decreasing, not increasing.
.
Slope is defined as the vertical change divided by the corresponding horizontal change.
.
The vertical change is -6.818182 and the corresponding horizontal change is 9 miles. The
slope is the division of the horizontal change into the corresponding vertical change which
is:
.

.
This rounds to a slope of -0.76 which is answer C.
.
RELATED QUESTIONS
An airplane covered 9 miles of its route while decreasing its altitude by 36,000 feet.... (answered by stanbon)

An airplane covered 22 miles of its route while decreasing its altitude by 13,000 feet.... (answered by Nate)

An airplane covered 14 miles of its route while decreasing its altitude by 39,000 feet.... (answered by venugopalramana)

An airplane covered 20 miles of its route while decreasing its altitude by 34,000 feet.... (answered by stanbon)

An airplane covered 25 miles of its route while decreasing its altitude by 19,000 feet.... (answered by funmath)

An airplane covered 10 miles of its route while decreasing its altitude by 10,000 feet.... (answered by funmath)

My question is: An airplane covered 22 miles of its route while decreasing its altitude... (answered by ptaylor)

An airplane covered 15 miles of its route while decreasing its altitude by 20,000 feet.... (answered by edjones)

An airplane covered 15 miles of its route while decreasing its altitude by 22,000 feet.... (answered by doukungfoo)

An airplane covered 24 miles of its route while decreasing its altitude by 36,000 feet.... (answered by checkley75)