Find the circle's circumference or area, as requested. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the circumference.
A. 5.8 yd
B. 23.2 yd
C. 11.6 yd
D. 10.7 yd
Answer: C
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Find the limit, if it exists.
A. 2 B. 0 C. 4 D. Does not exist
For what values of x does the series converge absolutely?
A. -7 < x < -5 B. x = -6 C. x = ±6 D. x = 6
Solve the problem.Maxwell's theory of electromagnetic waves established that electromagnetism moved through space in waves. Under certain conditions, an equation that Maxwell used to explain the motion of such waves would take the form 
where ? is the angle of incidence of the original wave, ? is the angle of incidence of the wave when reflected, A is the amplitude of the original wave, and B is the amplitude of the wave when reflected. Express 
in terms of sin 2? and sin 2?.
A. 
B. 
C. 
D. 
Solve the problem.Find an equation for the level curve of the function f(x, y) = 
that passes through the point 
.
A. x2 + y2 = 7 B. x2 + y2 = 25 C. x2 + y2 = 5 D. x + y = 5