Answer:
Approx 61.554 feet
Step-by-step explanation:
Since we are dealing with the opposite and adjacent sides, we will use tangent as our ratio.
Since the angle of elevation is 72 degrees, the left side of our equation is 
.
The right side of the equation is opposite over adjacent.
Set these equal to each other.
Simplify.
x is approximately 61.554.
Step-by-step explanation:
5x=4x+12(corresponding angle)
5x-4x=12
x=12
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The last set (choice D) is a subset of given set B.
The other 3 choices are wrong.
Consider that 100%-72%=28% represents the percentage of wrong answers. I would think as fractions as:
if 100% is the total number of answers and 28% are the wrong ones
as
if x is the total you have 14 wrong you can write:
x=(100/28)*14=50 questions
Any answer less than one would work, soothe answers are A and D
