please help answer

ASK YOUR TEACHER PRACTICE ANOTHER Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. (If there is no solution, enter N0 SOLUTION. If the system is dependent, set y = a and solve for x in terms of a.) { 5x + my 10x + 20y (X. y) = ( . ) Need Help? 3. [-I1 Points] LARCOLALGQ 7.1.502.XP. O O 4. {-11 Points] LARCOLALGQ 7.1.078. ASK YOUR TEACHER PRACTICE ANOTHER Use matrices to solve the system of equations (if possible). Use Gauss-Jordan elimination. (If not possible, enter IMPOSSIBLE. If the system is dependent, express x and y in terms of the parameter a.) x 3y 2x + 6y (x. y) = ( ) Need Help? -2 Use matrices to solve the system of equations (if possible). Use Gauss-Jordan elimination. (If not possible, enter IMPOSSIBLE. If the system is dependent, express x, y, and z in terms of the parameter a.) x+2y+ z 3x+7y+62 4 6 Own) =( ) Need Help? 6. {0/1 Points] PREVIOUS ANSWERS LARCOLALGB 7.1 .053. ASK YOUR TEACHER PRACTICE ANOTHER Use the matrix capabilities of a graphing utility to write the matrix in reduced row-echelon form. 1 3 4 -5 1 3 5 7 3 9 9 10 2 6 7 -5 1 3 0 0 0 0 . o o o o " 0 0 0 1 I I X Need Help? 1. [-I1 Points] LARCOLALGS 7.1.089. ASKYOURTEACHER Use the matrix capabilities of a graphing utility to write the augmented matrix corresponding tn the system of equations in reduced row-echelon form. Then solve the system. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, 1, and w in terms of the parameter a.) X+ y+z+ w=0 2x+3y+z2w=0 3X+Sy+z 0 (x,y,z,W)=( ) Need Help? ASK YOUR TEACHER Use the matrix capabilities of a graphing utility to write the augmented matrix corresponding to the system of equations in reduced rowechelon form. Then solve the system. (If there is no solution, enter N0 SOLUTION. If the system is dependent, express x, y, z, and w In terms of the parameter a.) 8. [I1 Points] LARCOLALG9 7.1.090. x+2y+z+3w=0 xy +w O yz+2w=0 (X.y,z. W) =( ) Need Help?