Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, give the solution with y arbitrary. 6x + 4y = -4 5x + 7y = 4
A. ?
B. {(2, -2)}
C. {(-2, -2)}
D. {(-2, 2)}
Answer: D
Mathematics
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Perform the indicated operation.4 - 14
A. -18 B. 18 C. 10 D. -10
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Round the whole number to the given place value.476,784, ten-thousands
A. 480,000 B. 500,000 C. 476,000 D. 470,000
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Evaluate the radical expressions or indicate that the root is not a real number.
A. 
B. 10
C. 10,000
D. Not a real number
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Solve the equation.log4(x + 5) + log4(x - 1) = 2
A. {3} B. {4} C. {3, -7} D. {-7}
Mathematics