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Find the sum of the first n terms of the given arithmetic sequence.

1/7, -1/49, 1/343, .....

Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. The sum of the series is S= _

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Sixta Kovacek
Sixta KovacekLv2
12 Jun 2019

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Use substitution to determine whether the given ordered pairs are solutions of the given equation. left parenthesis negative six sevenths comma negative four fifths right parenthesis− 6 7,− 4 5​, left parenthesis 0 comma one fifth right parenthesis0, 1 5​; 77aplus+55bequals=11 Is the ordered pair left parenthesis negative six sevenths comma negative four fifths right parenthesis− 6 7,− 4 5 a solution of the equation 77aplus+55bequals=11​? Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.

Algebra

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If​ A, B, and C are n times n n×n invertible​ matrices, does the equation Upper C Superscript negative 1 Baseline left parenthesis Upper A plus Upper X right parenthesis Upper B Superscript negative 1 Baseline equals Upper I Subscript n C−1(A+X)B−1=In have a solution​ X? If​ so, find it.

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