Let -13 -11 B = -30 -25 -20 -15 -9 -7 (a) Find the reduced row echelon form of the matrix B. rref(B) = (b) How many pivot columns does B have? (c) Do the vectors in the set span R? Be sure you can explain and justify your answer. choose {一星宝宝) (d) Are the vectors in the set linearly independent? Be sure you can explain and justify your answer. -30 choose

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A: Step 1: Step 2: Thank you.  Step 3: Step 4:

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A: Step 1: Reference: Linear Algebra

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