Add or subtract as indicated. Make sure that your answer is reasonable by estimating first.10.4 - 6.79
A. 3.61
B. 17.19
C. -3.61
D. 3.71
Answer: A
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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 40-kg block is attached to the end of the chain?
A. 25,040g J B. 14,500g J C. 27,000g J D. 12,540g J
Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. ln
- ln
+ ln
+ C
B. 2 ln
- 3 ln
+ 4 ln
+ C
C. -3 ln
+ 4 ln
+ C
D. 2 ln
+ 4 ln
- 3 ln
+ C
Integrate the function.
A. cos-1 
x + C
B. 2 cos-1 
x + C
C. 
sin-1 
x + C
D. sin-1 
x + C
Solve the combined inequality and graph the solution set. Write the solution in interval notation.9 < 3z + 3 ? 21
A. (2, 6)
B. [2, 6)
C. [2, 6]
D. (2, 6]