Write the number as a mixed numeral. Do not simplify.-21.42
A. -21
B. - 
C. -21
D. - 
Answer: A
Mathematics
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Find the volume of the solid generated by revolving the region R bounded by the graphs of the given equations about the 
.y = x, y = 0, between x = 3 and x = 5
A. 
?
B. 
?
C. 8?
D. 17?
Mathematics
Find a 95% confidence interval for the true population proportion.In a survey of 227 adults, 28% said that they had tried acupuncture at some point in their lives.
A. 24.7% to 31.3% B. 27.9% to 28.1% C. 27.6% to 28.4% D. 21.4% to 34.6%
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = (x - 2)2
B. f-1(x) = 
C. f-1(x) = x2 - 2, x ? 0
D. f-1(x) = x2 + 2, x ? 0
Mathematics
Determine the direction angle ? of the vector, to the nearest degree.w = 
A. 286° B. -16° C. 344° D. 106°
Mathematics