Find the mean.Find the mean of the following set of numbers: 7.8, 8.4, 5.8, 8.4, 5.6Round to the nearest tenth if necessary.
A. 7.2
B. 8.4
C. 6
D. 7.8
Answer: A
Mathematics
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Find the centroid of the region bounded by the given curves.The region enclosed by the parabolas y = - x2 + 8 and y = x2
A. 
= 0, 
= 8
B. 
= 4, 
= 0
C. 
= 0, 
= 
D. 
= 0, 
= 4
Mathematics
Write the number as a product of a real number and i. Simplify the radical expression.- 
A. -2
B. 2i
C. -2i
D. 2
Mathematics
Write the negation of the compound statement.
?
If 
, then 
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Divide.
A. 
B. 
x5y4
C. 
x11y6
D. 
x5y4
Mathematics