Use the figure below to answer the following question(s).
Which graphs are disconnected?
A. Graph 2 only
B. Graph 1 and Graph 4
C. Graph 2 and Graph 3
D. Graph 3 only
E. none of these
Answer: C
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Provide an appropriate response.Use the fundamental identity cosh2 x - sinh2 x = 1 to verify the identity. 1 - tanh2 x = sech2 x
What will be an ideal response?
Solve the problem.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the x-axis and the curve y = sin 2x, 0 ? x ? ?/2 about the line x = ?/2.
A. 
B. 
?2 - ?
C. 
?
D. 
?2
Evaluate the indicated trigonometric function of the acute angle ?.If ? is an acute angle of a right triangle and if sin ? = 
, then find the value of csc ?.
A. 
B. 
C. 
D. 
Solve the problem. Round your answer to the nearest tenth.If $2500 is invested in an account that pays interest compounded continuously, how long will it take to grow to $5200 at 5%?
A. 15.8 years B. 14.6 years C. 13.9 years D. 5.5 years