Find the integral by using integration by parts or other techniques. Round the answer to four decimal places if necessary.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Answer: A
Mathematics
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Solve the problem.Find the centroid of the region enclosed between the cone with equation 
and the plane with equation 
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Mathematics
Solve the problem.Suppose that the revenue from selling x radios is r(x) = 60x - 
dollars. Use the function r '(x) to estimate the increase in revenue that will result from increasing production from 110 radios to 111 radios per week.
A. $38.00 B. $82.00 C. $49.00 D. $37.80
Mathematics
Find the exact value of the expression.cos 
sin 
- cos 
sin 
A. 
B. 
C. 
D. 1
Mathematics
If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.
-4
A. -6561 B. -729 C. 729 D. 6561
Mathematics