board | StraighterL X SL Graded Exam #4 (page 18 of 20) X + attempt.php?attempt=5921147&cmid=64341&page-17 Topic 14: Solving Linear Systems Using Augmented Matrices 38:34 Use a calculator to approximate the reduced row-echelon form of the augmented matrix representing the given system. Give the solution set where x, y, and z are rounded to 2 decimal places. 0.52x-3.79y-4.67z=9.15 0.03x+0.06y+0.13z=0.53 0.974x+0.813y+0.419z=0.189 Select one O a. {(-4.49, -6.63, 2.49)} Ob. {(6.18, -11.2, 7.82)} Oc. {(-15.61, -1.39. -2.84)} Od. {(7.91, -1.03, 3.18)} PREVIOUS PAGE NEXT PAGE Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 14 19 20 Finish attempt