Solve using any appropriate method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this.9x - 8y = 95x + 5y = 90
A. (-3, -1)
B. (9, 9)
C. (-9, 9)
D. No solution
Answer: B
Mathematics
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Find the radius of convergence and the interval of convergence of the power series. Select the correct answer.
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Graph.6x2 - y2 - 72x + 14y - 49 = 0 
A. 
B. 
C. 
D. 
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Perform the division.
A. z2 + 3z - 9 B. z2 + 3z + 9 C. z2 - 3z + 9 D. z2 + 6z + 9
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Find the coordinates of the vertex of the parabola.y = 2x2 - 12x + 20
A. (-3, -2) B. (-2, -3) C. (2, 3) D. (3, 2)
Mathematics