Evaluate the determinant.

A. -1
B. 0
C. -90
D. 90

Answer: D

Mathematics

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Find the equation of the parabola satisfying the given conditions. The vertex is at the origin.Focus (-7, 0)

A. y = - x2
B. x2 = -28y
C. y2 = -28x
D. y = -28x2

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Mathematics

Decide whether the statement is true or false.The circle with equation (x + 4)2 + (y - 4)2 = 64 has center at (4, -4).

A. True B. False

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Mathematics

Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.

A. (-4, 5, 4) B. (4, 5, -4) C. (4, -4, 5) D. no solution

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Mathematics

Evaluate the radical expressions or indicate that the root is not a real number.

A. -4 B. 4 C. 64 D. Not a real number

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Mathematics