chapter review, doesn't go towards grade.
Find the following matrix product, if it exists. 1 -6 :I::] 9 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. 1-6 O A. :][:] (Simplify your answer.) 9 OB. The product does not exist Solve the matrix equation AX=B for X. 1 - 2 - 3 8 A= 1 4 6 , B= B= 8 1-1-2 8 X = Use substitution to solve the system. 2x - 6y = 16 - 2x+y = -4 Select the correct choice below and, if necessary, fill in the answer box to complete your choice O A. The solution is (Simplify your answer. Type an ordered pair) OB. There are infinitely many solutions O C. There is no solution 9 Obtain an equivalent system by performing the stated elementary operation on the system Multiply the first equation by 6z 9x 3x 2y + 5y 157 = 45 21 1 152 5x - 52 10 6z 45 [ - ] 9x 3x 5x 2y + 15y 152 . = 21 le 5z 10 Type integers or simplified fractions.) Use the inverse of the coefficient matrix to solve the system of equations. X+ 2y + 3z = 18 2x + 3y + 2z = 21 -x-2y 2z = - 28 Identify the inverse of the coefficient matrix (Type an integer or simplified fraction for each matrix element.) Solve the system (xy.z)= ODD (Type integers or simplified fractions.) is 15.) of the system Determine whether the given ordered pair is a solution of the system of equations (5.8). - 7x+y=-27 3x +y = 7 3 Yes Solve the matrix equation AX = B for X. 1 8 35 A= B= 7 8 5 Find the following matrix product, if it exists. 3 2 - 3 5 4 0 0 - 3 Select the correct choice below and if necessary, fill in the answer box to complete you 4 3 1 1 1 OA. (Simplify your answer.) 5 4 0 2 - 3 0 - 3 OB. The product does not exist. Perform the indicated operation, if possible 3 5 8 - 7 90 - 14 1 + 6 -1 13 2 - 2 7 - 8. 12 Select the correct choice below and, if necessary, fill in the answer boxes to complete y O A. The resulting matrix is OB. The matrices cannot be added. Perform the indicated operation if possible. --3 6 2 1 -5 - 11 -5 - 2 0 - 6 0 3 Select the correct choice below and, if necessary, fill in the answer box to complete your choice O A. The resulting matrix is (Simplify your answer.) O B. The resulting matrix does not exist because the operation is not possible -9 0 Let A= 2 - 6 Find - 5A. - 5A = Solve the system by back substitution. 2x + 4y +z + 3w = -1 - 2y - 12z - 4w = - 16 - Z-WE 2 - 3w= -9 The solution set is {OD0)). (Type an integer or a simplified fraction.) Use substitution to solve the system. 7x + 9 = 30 5x - y = 38 Select the correct choice below and, if necessary, fill in the answer box to complete your choice O A. The solution is (Type an ordered pair) OB. There are infinitely many solutions O C. There is no solution 2 - 9 Let A= - 1 2 Find 4A. 4A= Find the following matrix product, if it exists. 3 8 2 -3-7 5 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. -8 OA. 31 ::} (Simplify your answer.) 3 OB. The product does not exist. Sweet The Ulem Aliud company top 10 en 200w They can buy vrlocks and large Use the inverse of the coefficient matrix to solve the system of equations. X + 2y + 3z = 15 2x + 3y + 4z = -6 - x - 4y - 8z = - 79 (x,y,z) = (0 (Type an ordered triple, using integers or fractions.) Find the size of the matrix. Identify a square, colum 6 The size of the matrix is 0 The matrix is The additive inverse of the matrix is
