Evaluate the expression.84
A. 64
B. 512
C. 32
D. 4096
Answer: D
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 0, x = 1, x = 9
A. ?ln 9
B. 
?
C. 
?
D. 
?
Provide an appropriate response.True or false? If a < 0, then 
= j
.
A. True B. False
Solve the problem.At a track meet, Russell ran the first heat of the 100-yd dash in 14.5 sec, Sergy in 14.8 sec, and Omar in 15.2 sec. In the second heat, they got 14.3 sec, 14.4 sec, and 14.7 sec. Write a 1 x 3 matrix giving the changes in times. If the changes repeat, who will win?
A. 
, Omar
B.
[0.2 0.4 0.5], Sergy
C.
[-0.2 -0.4 -0.5], Sergy
D.
[-0.2 -0.4 -0.5], Russell
Indicate whether the statement is true always, sometimes, or never.When i is raised to an even power, the result is -1.
A. Always B. Sometimes C. Never