Find the vertices of the hyperbola with the given equation.
- 
= 1
A. (-1, 0), (1, 0)
B. (0, -1), (0, 1)
C. (0, -2), (0, 2)
D. (-2, 0), (2, 0)
Answer: B
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Find the center of mass of a thin plate covering the given region with the given density function.The region between the x-axis and the curve y = 
, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 1
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Solve the equation for the indicated variable.
= 
+ 
+ 
for C2 (equivalent capacitance)
A. C2 = 
B. C2 = 
C. C2 = Ceq - C1 - C3
D. C2 = 
Solve the problem.The concentration of a drug in the bloodstream, measured in milligrams per liter, can be modeled by the function, 
where t is the number of minutes after injection of the drug. When will the drug be at its highest concentration? Approximate your answer rounded to two decimal places.
A. t = 3.65 minutes after the injection is given B. at the time of injection C. t = 0.55 minutes after the injection is given D. t = 4 minutes after the injection is given
Convert to fraction notation.-14
A. - 
B. - 
C. - 
D. - 