Correct 875 points out of 875 not flaggedflag

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Question 15Correct8.75 points out of 8.75Not flaggedFlag questionQuestion textFind all solutions of the form (a, b, c, d).5a+b-c+d=-193b+4c-4d=24
a+5c+4d=112a+3b-3c=-5
Question 16Incorrect0.00 points out of 8.75Not flaggedFlag questionQuestion textPerform the elementary row operation on the given matrix. - 12R2 R2
Question 17Correct8.75 points out of 8.75Not flaggedFlag questionQuestion textPerform the elementary row operation on the given matrix. 3R2 + R1 R1
Question 18Correct8.75 points out of 8.75Not flaggedFlag questionQuestion textSolve the system using Gaussian elimination or Gauss-Jordan elimination.
-5y = 24 - 3x2(x - 4y) = 49 - ySelect one:a. {(7, 9)}b. {(-9, -7)}c. {(-7, -9)} Correctd. {(9, 7)}FeedbackThe correct answer is: {(-7, -9)}
Question 19Correct8.75 points out of 8.75Not flaggedFlag questionQuestion textSolve the system using Gaussian elimination or Gauss-Jordan elimination.-4x - 6y + 5z = 138x + 4y - 7z = -74x - 2y - 2z = -15
Question 20Incorrect0.00 points out of 8.75Not flaggedFlag questionQuestion textSolve the system using Gaussian elimination or Gauss-Jordan elimination.-2x - y + 3z = 13x - 3y - 3z = -4

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