Solve the problem.A 50-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 10 kg/m. How much work is required to wind the chain onto the cylinder if a 60-kg block is attached to the end of the chain?
A. 12,560g J
B. 15,500g J
C. 25,060g J
D. 28,000g J
Answer: B
Mathematics
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Determine whether the function is one-to-one by graphing and using the horizontal line test.f(x) = 
A. Yes B. No
Mathematics
Evaluate the indicated function with the given information.Find the value of sin 
if cos ? = 
(0° < ? < 90°).
A. 
B. 
C. 
D. 
Mathematics
Use trigonometric identities to find the exact value.
A. -2
B. -
C. - 
D. - 
Mathematics
Solve.An investment is worth $2282 in 1995. By 1999 it has grown to $2986. Let y be the value of the investment in the year x, where x = 0 represents 1995. Write a linear equation that models the value of the investment in the year x.
A. y = -176x + 2282
B. y = -176x + 3690
C. y = 176x + 2282
D. y = 
x + 2282
Mathematics