Solve the system of equations by Gauss-Jordan elimination.
A. {(0, 0, 2)}
B. {(0, 2, 0)}
C. {(0, 2, -2)}
D. ?
Answer: B
Mathematics
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Find the intersection.x = -3 - 5t, y = 7 + 2t, z = 4 + 2t ; -6x - 8y - 3z = 8
A. (-8, 9, 6)
B. 
C. (2, 5, 2)
D. 
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Solve the problem. Round to the nearest cent or tenth of a percent.An item has a 27.9% markup based on selling price. What is the equivalent markup percent based on the cost?
A. 21.8% B. 78.2% C. 61.3% D. 38.7%
Mathematics
Perform the indicated operations. Express the answer as a single polynomial in standard form.-2x(-5x - 4)
A. -5x2 + 8x B. 10x2 - 4x C. 10x2 + 8x D. 18x2
Mathematics
Solve the problem.For a percentage decrease of 95%, state the multiplier.
A. 1.5 B. 0.5 C. 0.95 D. 1.95
Mathematics