Graph the function and the indicated tangent line.Graph f(x) = -2x2 and the tangent line to the graph at the point whose x-coordinate is -2.

A.

B.

C.

D.


Answer: B

Mathematics

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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = - ,   < ? < 2?Find cos .

A. - 
B. - 
C.  
D.  

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Determine whether matrix B is the inverse of matrix A by finding the product AB.A = , B = 

A. B = A-1 B. B ? A-1

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Identify the equation without completing the square.4y2 - 4x - 2y = 0

A. ellipse B. hyperbola C. parabola D. not a conic

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Solve the problem.Susan has been working on a job that will require 45 hours to complete. If she has completed  of the job, how many hours has she worked?

A. 40 hours
B. 20 hours
C. 5 hours
D. 4 hours

Mathematics