Solve.Use the following graph to solve x2 - 4x - 5 = 0.y = x2 - 4x - 5

A. -1, 5
B. 5, 1
C. -5, 1
D. -5, -1


Answer: A

Mathematics

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Perform the indicated operations. Write the result in the form a + bj.2

A. -32 + 126j B. 32 + 126j C. 32 + 2j D. 32

Mathematics

Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.

A. Local minimum at x = +1.29,; local maximum at x = -1.29; concave up on (0, ?); concave down on (-?, 0) B. Local minimum at x = +1.29,; local maximum at x = -1.29; concave up on (-?, -1.29) and (1.29, ?); concave down on (-1.29, 1.29) C. Local minimum at x = -1.29,; local maximum at x = +1.29; concave up on (-?, -1.29) and (1.29, ?); concave down on (-1.29, 1.29) D. Local minimum at x = +1.29,; local maximum at x = -1.29; concave down on (0, ?); concave up on (-?, 0)

Mathematics

Use Cramer's Rule, if possible, to solve the system of linear equations. 

A.
B.
C.
D. not possible

Mathematics

Use estimation to determine which calculation is incorrect.

A.

B.

C.

D.

Mathematics