Find the mean.72, 41, 72, 91, 41

A. 62.9
B. 63.9
C. 63.4
D. 79.3

Answer: C

Mathematics

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Evaluate the double integral over the given region. R = 

A.
B.
C.
D. ?

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Mathematics

Find the domain and range of the relation.{(-6,9), (3,-5), (5,-3), (1,-2), (7,-8)}

A. D = {-3, -2, -8, 9, -5}; R = {5, 1, 7, -6, 3} B. D = {5, 1, 7, -6, 3}; R = {-3, -2, -8, 9, -5} C. D = {-8, -6, 9, 3, -5}; R = {5, -3, 1, -2, 7} D. D = {5, -3, 1, -2, 7}; R = {-8, -6, 9, 3, -5}

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Mathematics

Add or subtract the functions, as indicated.P(x) = 4x4 + 7x2 + 2, Q(x) = 4x3 + 1, R(x) = 9x4 + 2x3 + 9x2; Find (P + Q - R)(x).

A. 13x4 + 6x3 + 16x2 + 1 B. 13x4 + 6x3 + 16x2 + 3 C. -5x4 + 6x3 + 16x2 + 1 D. -5x4 + 2x3 - 2x2 + 3

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Mathematics

Find all indicated roots. Write your answer in the specified form.Eighth roots of i; trigonometric form

A.  + i,   - i, -  + i, -  - i
B. 1, -1, i, -i
C. 1, -1 , i, -i,  + i,  - i, -  + i, -  - i
D. cis , cis , cis , cis , cis , cis , cis , cis 

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Mathematics