Solve the system of equations using matrices. Use Gauss-Jordan elimination.
A. {(2, 9, 7)}
B. {(4, 7, -2)}
C. {(2, 7, 9)}
D. {(-2, 7, 4)}
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Provide an appropriate answer.Let A = 
and B = 
. Show that AB ? BA. Show all your work.
What will be an ideal response?
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Find the domain and the range of the function.
A. D: x > 4, R: y ? 0 B. D: All real numbers, R: All real numbers C. D: x > 4, R: y ? 0 D. D: x > 0, R: y ? 0
Mathematics
Solve the problem.The figure shown here shows a rectangle inscribed in an isosceles right triangle whose hypotenuse is 8 units long. Express the area A of the rectangle in terms of x.
A. A(x) = 2x(4 - x) B. A(x) = x(4 - x) C. A(x) = 2x2 D. A(x) = 2x(x - 4)
Mathematics