Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.4x - y + 3z=12x + 4y + 6z=-325x + 3y + 9z=20
A. ?
B. {(-8, -7, 9)}
C. {(2, -7, -1)}
D. {(8, -7, -2)}
Answer: A
Mathematics
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A. 1.000 B. 3.000 C. 1.500 D. 0.500
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Use Pythagorean identities to find the indicated function value.sec ? =-7, 90° < ? < 180°; find tan ?
A. -4
B. -8
C. -5
D. -6
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A. 0.055 B. 1.100 C. 0.065 D. 0.366
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Find all values that make the expression undefined.
A. 0 B. Never undefined C. 3 D. -3
Mathematics