Given a slope
, the slope
of a line perpendicular to
is the opposite of the inverse of 
In other words:

So, the slope of CD is -5/2.
It is an irrational number. A number is rational if it can be expressed as a quotient of 2 integer numbers. Number π2 cannot be expressed as a quotient of integers, so it is an irrational number.
Answer:
Option A.
Step-by-step explanation:
Distance between Bob and the center of the mountain at the base = 19,427.5 ft.
Angle of elevation to the top of the mountain = 25°11'
We know that
1 degree = 60 minutes
1/60 degree = 1 minute

Let the height of the mountain be h.
In a right angled triangle






Therefore, the height of the mountain to the nearest foot 9135. Option A is correct.
Answer:
the sum of two numbers is multplication and its opposite is a negative version of it
Step-by-step explanation:
Answer:
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Step-by-step explanation:
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