Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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For what values of x does the series converge absolutely?
A. -9 ? x < -7 B. -9 < x ? -7 C. -9 < x < -7 D. -9 ? x ? -7
Mathematics
Use the order of operations agreement to simplify the given expression.
÷ 
A. - 
B. - 6
C. - 
D. - 
Mathematics
Use a spherical coordinate integral to find the volume of the given solid.The solid bounded below by the hemisphere 
and above by the cardioid of revolution 
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Solve the problem.The loudness of a sound can be approximated by the formula d = 10 log10
, where d is the number of decibels. The higher the value of d, the louder the sound. Find the number of decibels when 
and 
A. 10,000 decibels B. 4 decibels C. 14 decibels D. 40 decibels
Mathematics