Find the standard deviation for each data set. Round to one more place than the data.64, 71, 56, 71, 51, 41, 52, 22, 72
A. 17.7
B. 6.9
C. 15.6
D. 16.5
Answer: D
Mathematics
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Find the net cost. Round to the nearest cent.$872 less 10/10/20/30
A. $802.00 B. $261.60 C. $436.00 D. $395.54
Mathematics
Government economists of a developing country determined that the purchase of imported perfume is related to a proposed "luxury tax" by the formula 
, 
, where N(x) measures the percentage of normal consumption of perfume when a "luxury tax" of x% is imposed on it. Find the rate of change of N(x)
for a tax of 70%.
?
A. ?
B. ?
C. ?
D. 
Mathematics
Evaluate.Find (f/g)(4) given f(x) = -8x + 2 and g(x) = 2x2 + 2.
A. - 
B. - 
C. - 1
D. - 
Mathematics
Find the negative (opposite) of the number.11
A. 11
B. 
C. -11
D. 0
Mathematics