Find the expected value for the random variable x having this probability function.

A. 6.3
B. 8
C. 6
D. 7.5


Answer: B

Mathematics

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Find the extreme values of the function subject to the given constraint.  

A. Maximum: 100 at    and    minimum: -100 at    and  
B. Maximum: 100 at    minimum: -100 at  
C. Maximum: 100 at    minimum: 0 at  
D. Maximum: 100 at    and    minimum: -100 at    and  

Mathematics

Find the product.(x - 3)3

A. x3 - 3x2 + 15x - 27 B. x3 - 9x2 + 9x - 27 C. x3 - 9x2 + 15x - 27 D. x3 - 9x2 + 27x - 27

Mathematics

Find the average value of the function on the given interval.f(x) = x2 e5x; [0, 5] Give your answer in exact form.

A. e25  - 
B. e25  - 
C. e25  - 
D. e25 

Mathematics

Write an expression for the nth term of the geometric sequence. Then find the indicated term. (Round your answer to three decimal places.) ? ?

A. , About 3355.349
B. , About 3355.349
C. , About 5520.099
D. , About 3355.349
E. , About 3355.349

Mathematics