Explain why the columns of an n x n matrix are linearly independent when the matrix is invertible. Your work should be legible, and all your logic should be clear and justified.

Q: ecimal:

A: From triangle BDC , BD=18mm,∠DAB=45°,∠DCB=αBA=dAC=b

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A:

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A:

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A: Sample proportion for each color can be calculated as follows:

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A: Note that, the LHS is equal to the RHS.

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