Simplify the expression.
?

?

A.
B. ?
C. ?
D. ?

Answer: A

Mathematics

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Provide an appropriate response.Use the graphs of the linear functions to solve the problem. Write the linear system whose solution set is . Express each equation in the system in slope-intercept form. 

A.

y = x - 2
y = x + 1
B.
y = x + 2
y = x - 1
C. y = - x + 2 
y = x + 1
D. y = - x + 2
y = x - 2

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Mathematics

Find the indicated set.Let A = {2, 7, 9, 12, 15}, B = {3, 9, 15, 20}, and C = {4, 9, 12, 15}.Find 

A. {2, 3, 4, 7, 9, 12, 15, 20} B. {2, 7, 9, 12, 15, 3, 9, 15, 20, 4, 9, 12, 15} C. {9, 15} D. {9, 12, 15}

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Mathematics

Find the derivative.f(x) = 8x - 1

A. f'(x) = 0 B. f'(x) = 7 C. f'(x) = 8 D. f'(x) = 8x

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Mathematics

Select the curve represented by the parametric equations. ? Prolate cycloid: ?

A. ?


B. ?


C. ?


D. ?


E. ?


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Mathematics