Find the product of the complex number and its conjugate.6 + 
i
A. 72
B. 30
C. 0
D. 42
Answer: D
Mathematics
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Simplify the rational expression. If the rational expression cannot be simplified, so state. 
A. cannot be simplified
B. 
C. 3
D. 8
Mathematics
Use a formula for Sn to evaluate the series.
A. 6 B. 16 C. 44 D. 51
Mathematics
Provide an appropriate response.Suppose X is uniformly distributed over the interval 
. Find P(3 < X < 8).
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the problem.Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 11 miles with the wind, and in the same amount of time runs 6 miles against the wind. What is the rate of the wind? (Round your answer to the nearest tenth, if necessary.)
A. 2.5 mph B. 1.5 mph C. 5 mph D. 17 mph
Mathematics