Do the operation and express the answer in a + bi form.
?
(5 - 5i) + (8 + 3i)
?

A. 2 - 13i
B. - 13 + 2i
C. 13 + 2i
D. - 13 - 2i
E. 13 - 2i

Answer: E

Mathematics

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Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 3, u '(1) = -5, v(1) = 7, v '(1) = -2.  at x = 1

A.
B.
C. - 
D. - 

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Rationalize the denominator. 

A.
B.
C. 5x
D.

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Solve the problem.What is the domain of the cosine function?

A. all real numbers, except odd multiples of  (90°)
B. all real numbers, except integral multiples of ? (180°)
C. all real numbers from -1 to 1, inclusive
D. all real numbers

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Mathematics

Plot the points in the set on a real number line.  

A.  
B.  
C.  
D.  

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Mathematics