Use the Gauss-Jordan method to find A-1, if it exists.A = 

A.

B.

C.

D. Does not exist

Answer: B

Mathematics

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Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers.  +

A. 5x + y3
B. (5x + y9)
C. (5x + y3)
D. (5x3 + y3)

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Mathematics

Find the sum, if it exists, of the terms of the infinite geometric sequence.a1 = 1, r = 

A.
B.
C.
D. Does not exist

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Mathematics

Find the x- and y-intercepts of the graph of the given equation, if they exist. Then graph the equation.9y - 3x = -6

A. x: 2; y: - 

B. x: -2; y: - 

C. x: - ; y: -2 

D. x: - ; y: 2  

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Mathematics

Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.x2 + y2 = 13.85x = 3y - 1

A. (-3.41, -1.47), (3.62, 0.87) B. (-11.26, -3.42), (11.06, 4.02) C. (1.47, 3.42), (-0.87, -3.62) D. (3.42, 1.47), (-3.62, -0.87)

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Mathematics