Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in ordered pair form.

A. ?
B. {(6, 5)}
C. {(6, -1)}
D. {(5, 0)}


Answer: D

Mathematics

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A.
B. 2?a
C.
D. 2a

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Provide an appropriate response.Use the fact that tan-1 x = for |x| < 1 to find the series for cot-1 x.

A.
B.  - 
C.
D.  - 

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Find the sum or difference.(2x7 + 6x9 - 7 - 7x8) - (2 - 2x8 + 3x9 - 7x7)

A. 3x9 - 9x8 - 5x7 - 5 B. 3x9 - 5x8 + 9x7 - 9 C. 9x9 - 9x8 - 5x7 - 5 D. 9x9 - 9x8 - 5x7 - 9

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Solve the problem.What is the y-intercept of the line?

A. 1 B. 2 C. 0 D. -1

Mathematics