Question: answer questions Question 4 (1 point) The following vectors span R4. True False Question 5 (1 point) Determine the rank of A. 5 -2 2

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Question 4 (1 point) The following vectors span R4. True False Question 5 (1 point) Determine the rank of A. 5 -2 2 2 2 5 1 A = 1 -12 9 -3 8 O 1 O2 0 3 0 4 Question 6 (1 point) Solve the system of equation for y using Cramer's rule. Hint: The determinant of the coefficient matrix is -23. 5xty - z=-7 2x - y - 2z = 6 3x + 2z = -7 O -4 0 4 O

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