Find the acute angle A. Leave answer in decimal degrees rounded to seven decimal places, if necessary.tan A = 1.985822
A. 116.728445°
B. 243.271555°
C. 26.7284453°
D. 63.2715547°
Answer: D
Mathematics
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Solve the problem.The locations of three receiving stations and the distances to the epicenter of an earthquake are contained in the following three equations: 
. Determine the location of the epicenter.
A. at (-4, -6) B. at (-4, -5) C. at (-5, -5) D. at (-6, -3)
Mathematics
Factor the expression completely, if possible.x2 - 81
A. (x - 9)2 B. (x + 9)(x - 9) C. (x + 9)2 D. Does not factor
Mathematics
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
+ 2
A. 
B. 
C. 
D. 
Mathematics
Use the binomial theorem to expand and simplify the expression 
a. 
b. 
c. 
d. 
Mathematics