The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)
When is the body standing still?
A. 2 < t < 3, 4 < t < 5, 7 < t < 9
B. t = 3, t = 5, t = 8
C. 8 < t ? 10
D. 1 < t < 2
Answer: D
Mathematics
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Find the exact value of the expression.
A. 
B. 
C. - 
D. - 
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Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire that lies along the semicircle y = 
if the density of the wire is 
.
A. 
= 0, 
= 1
B. 
= 
, 
= 
C. 
= 0, 
= 
D. 
= 1, 
= 1
Mathematics
Determine whether the statement is true or false.-25 ? -16
A. False B. True
Mathematics
Perform the operation.
?
?
A. 58,102.17 B. 58,101.17 C. 58,102.27 D. 58,102.42 E. 58,102.16
Mathematics