Question: If Ax = b has a unique solution for some b, then mark all that apply. A. A has a pivot in every column B.

If Ax = b has a unique solution for some b, then mark all that apply. A. A has a pivot in every column B. If A is square, Ax = c has a solution for any c with the same size as b C. Ax = c has a solution for any c with the same size as b, then A must be square V D. If A is square, then it is invertible

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