Select one a 0 18 16 b c d the correct answer is

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Select one:a. {(0, -18, 16)}b. c. d.
The correct answer is:
Question 16Correct8.75 points out of 8.75Determine if the matrix is in row-echelon form.
Question 17Correct8.75 points out of 8.75Perform the elementary row operation on the givenmatrix. - R → R 22
Question 18Correct8.75 points out of 8.75Use a calculator to approximate the reduced row-echelon form of the augmented matrix representingthe given system. Give the solution set where x, y,and z are rounded to 2 decimal places.
Question 19Incorrect0.00 points out of 8.75The solution set to a system of dependent equationsis given. Write three ordered triples that aresolutions to the system. Answers may vary. Select one:a. (5, 0, 0), (2, 3 ,0), (-3, 0, 1)b. (5, 0, 0), (-2, 3 ,0), (1, 0, 1)c. (2, 0, 0), (-2, 3 ,0), (-3, 0, 1)d. (2, 0, 0), (2, 3 ,0), (1, 0, 1)The correct answer is: (2, 0, 0), (-2, 3 ,0), (-3, 0, 1)
Question 20Correct8.75 points out of 8.75Solve the system using Gaussian elimination orGauss-Jordan elimination. -3x- 7y+ 7z= 71 -2x+ 7y- 3z= -22 -3x- 9y+ 9z= 87

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