Solve the problem.A balloon used in surgical procedures is cylindrical in shape. As it expands outward, assume that the length remains a constant 90.0 mm. Find the rate of change of surface area with respect to radius when the radius is 0.070 mm. (Answer can be left in terms of ?).
A. 90.14? mm2/mm
B. 90.28? mm2/mm
C. 180.0? mm2/mm
D. 180.28? mm2/mm
Answer: D
Mathematics
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Refer to the figure in which 
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If CD = 12 m and AB = 25 m, find AD. (a) 16m (b) 20m (c) 24m (d) 50m
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Perform the indicated operations and simplify the result. Leave the answer in factored form.
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A. 
B. 
C. 
D. 
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The following table defines a discrete probability distribution. Find the expected value of the distribution.
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x16202428P(x)
0
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A. 
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E. 
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