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
Answer: D
Mathematics
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Graph the solution set of the system of inequalities.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
6x + 4 = 9x - 3
A. 
B. 
C. 
D. 
Mathematics
Factor.64x2 + 48xy + 9y2
A. (8x + 3y)(8x - 3y) B. (8x + 3y)2 C. (8x - 3y)2 D. Prime
Mathematics
First rewrite the quadratic function in standard form by completing the square, then find any x-intercepts and any y-intercepts.f(x) = 6x2 + 12x + 4
Give your answers in exact form.
A. x-intercepts: 
and 
; y-intercept: 4
B. x-intercepts: 
and 
; y-intercept: 0
C. x-intercepts: 
and 
; y-intercept: 4
D. x-intercepts: 
and 
; y-intercept: 0
Mathematics