12. Use the method of elimination to solve the following system of equations. If the system is consistent, express the solution as an ordered pair. If the system is dependent, express the solution set in terms of one of the variables. Leave all fractional answers in fraction form. 13. Evaluate the determinant of the matrix. 14. Use Cramer's rule to solve the system . Indicate the number of solutions to this system. State the solution, if one exists, and if there are infinitely many solutions, express the solution set in terms of one of the variables. Given the following matrices, if possible, determine . If not, state "Not Possible". 15. 16. the following matrices, if possible, determine . If not, state "Not Possible". 17. Given the following matrices, if possible, determine . If not, state "Not Possible". 18. Given the following matrices, if possible, determine . If not, state "Not Possible". 19. Given the following matrices, if possible, determine . If not, state "Not Possible".
12. Use the method of elimination to solve the following system of equations. If the system is consistent, express the solution as an ordered pair. If the system is dependent, express the solution set in terms of one of the variables. Leave all fractional answers in fraction form. 13. Evaluate the determinant of the matrix. 14. Use Cramer's rule to solve the system . Indicate the number of solutions to this system. State the solution, if one exists, and if there are infinitely many solutions, express the solution set in terms of one of the variables. 15. Given the following matrices, if possible, determine . If not, state "Not Possible". 16. the following matrices, if possible, determine . If not, state "Not Possible". 17. Given the following matrices, if possible, determine . If not, state "Not Possible". 18. Given the following matrices, if possible, determine . If not, state "Not Possible". 19. Given the following matrices, if possible, determine . If not, state "Not Possible".