A man standing near a radio station antenna observes that the angle of elevation to the top of the antenna is ?b? = 63°. He then walks 100 feet further away and observes that the angle of elevation to the top of the antenna is ?a? = 42°. Find the height of the antenna to the nearest foot. (Hint: Find x first.)
?
?
__________ ft
Fill in the blank(s) with the appropriate word(s).
166
Mathematics
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Provide an appropriate response.Write 0.109 as a percent.
A. 0.109% B. 0.0109% C. 109% D. 10.9%
Mathematics
Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = (x - ex cos y)i + (x + ex sin y)j; C is the lobe of the lemniscate r2 = sin 2? that lies in the first quadrant.
A. 
B. 0
C. 
D. 1
Mathematics
Use the given graph of the quadratic function f to write its formula as 
.
A. f(x) = -(x + 1)2 - 3 B. f(x) = -(x - 1)2 - 3 C. f(x) = -(x + 1)2 + 3 D. f(x) = (x + 1)2 - 3
Mathematics
Let x be a number. Translate the expression into an English phrase.9x
A. The product of 9 and a number B. The quotient of 9 and a number C. Divide a number by 9. D. The sum of 9 and a number
Mathematics