Solve the equation.
= 
A. 
B. {23}
C. 
D. 
Answer: D
Mathematics
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Solve the problem.A 20-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and that the chain has a density of 5 kg/m. How much work is required to wind the entire chain onto the cylinder using the winch?
A. 1,950g J B. 100g J C. 2,000g J D. 1,000g J
Mathematics
Find the midpoint of the segment with the given endpoints.
and 
A. 
B. 
C. 
D. 
Mathematics
Show that the function is a solution of the wave equation.w(x, t) = ex - ct
A. No B. Yes
Mathematics
Perform the division.
A. x2 + 2 + 
B. x2 + 2 + 
C. x2 + 2
D. x2 + 2x + 1
Mathematics