<span>Elevation of city D is half the elevation of city C, It is given that the evelation of city C is 12 feet above the sea level level. Hence elevation of city D=12/2=6feet above the sea level. This is the answer to part A The elevation of city D=x/2, where x is the elevation of city C in feet. For part B write, here x=12 hence x/2=6 Therefore the elevation of city D is 6feet above the sea level.
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you cant add 3x^2 and 7x + 2 :)
you put it in the correct order by the degree :)
Answer:
Step-by-step explanation:
Let's call 
the balloon's height above the ground and 
the horizontal distance between the balloon and the first milepost.
If the angle of the depression of this milepost is 24 degrees, we can say the following:
<em>
(equation 1)</em>
For the next milepost, the horizontal distance between the balloon and tihs milepost will be 
and the angle of depression will be 20 degrees, so we can say the following
then, replacing from <em>equation 1</em>
Resolving, we'll find the value of
So, the balloon's height above the ground is 1.99miles
