Change the mixed number to an improper fraction.3

A.
B.
C.
D.


Answer: B

Mathematics

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Find the expected value of the random variable.The random variable X is the number of siblings of a student selected at random from a particular secondary school. Its probability distribution is given in the table.

A. 1.479 B. 2.5 C. 1.771 D. 1.375

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Determine whether the function is a solution of the wave equation.w = e10ct cos 10x

A. Yes B. No

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Factor when possible.x2 + 8x - 48

A. x2 + 8x - 48 B. (x - 12)(x + 1) C. (x + 12)(x - 4) D. (x - 12)(x + 4)

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Write the partial fraction decomposition of the rational expression.

A.  + 
B.  + 
C.  + 
D.  + 

Mathematics