Find the indicated roots.Fourth roots of -16; trigonometric form

A. 1 + i, 1 - i, -1 + i, -1 - i
B.  + i,  - i, -  + i, -  - i
C. 8 + 8i, 8 - 8i, -8 + 8i, -8 - 8i
D. 2 + i, 2 - i, -2 + i, -2 - i


Answer: B

Mathematics

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Solve the problem.The mathematical model  represents the cost in dollars a company has in manufacturing x items during a month. Based on this model, how many items were produced if expenses were $440,000 in one month?

A. 134 items B. 600 items C. 733 items D. 466 items

Mathematics

Use these sets to find the following. Identify any disjoint sets.Let U = {5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, M = {5, 7, 9, 11},   and (N ? R) ? Q

A. {5} B. ?; N and R are disjoint sets. C. {5, 7} D. {7}

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State the degree of the polynomial equation.x3 + 7x2 - x - 7 = 0

A. 4 B. 5 C. 6 D. 3

Mathematics

Express the given function H as a composition of two functions f and g such that H(x) = (f ? g)(x).H(x) = 

A. f(x) = , g(x) = x2 - 9
B. f(x) = , g(x) = - 
C. f(x) = , g(x) = x - 9
D. f(x) = , g(x) = x2 - 9

Mathematics