Question 10 0/1 pt 5 3 99 @ Details Find the value of z in the solution of the following system: -1x - 4y + 2z = 7 1x + 3y + 3z = 56 - 5x + 3y - 1z = - 62Question 9 A > 0/1 pt 3 99 Details Find the value of z in the solution of the following system: -4x + 5y - 1z = - 30 -1x - 4y - 4z = - 39 5x - 3y - 2z = -21 Z =0 Question 6 v ( ) B on pt 0 3 8 99 (D Details 2 1 1 Given the matrix 3 U 4 ,find its 0 5 5 determinant. The determinant is