Use elementary row operations to write the matrix in row echelon for 124 1 227 3 368-1

Compute the sum of A = 85 63 and B = 2a 4b - 3c - 8d possible A+B= (Simplify your answer. Type an expression for each matrix element. Use integers or fractions for any numbers in the expression.) JA الله S Nex

Please select abc or d

Explain why the product of a 3 × 2 matrix by a 3 × 2 matrix is undefined.

Please, is urgent Given the matrices [A] and [B], when performing the operation [A] [B] = [C], shows the multiplication of the rows and columns that you need to perform to obtain the elements C_42, C_32, C_14, what value do these elements?

Determine reduced row echleon form with steps

Using only the elements 0 and 1, find the number of 3x3 matrices that are (a) diagonal, (b) upper triangular, (c) nonsingular and upper . Generalize to nxn matrices.

M1 Matrix is: M= -1 -1 4 3 A) Find the value in the first row and first column of the product M^-1M using matrix multiplication. Select the correct expression below and fill in the answer box to complete your selection. B) Find the value in the first row and second column of the product M^-1M using matrix multiplication. Select the correct expression below and fill in the answer box to complete your selection. C) Find the value in the second row and first column of the product M^-1M using matrix multiplication D) Find the value in the second row and second column of the product M^-1M using matrix multiplication

The table below represents the data for the salaries of 4 secretarial workers at a local law firm. The first row represents each employee's wage per hour, and the next 6 rows represent the amount of hours each person worked for the corresponding days of this 1 week time period. (The law firm is closed on Sundays) Use matrix multiplication to find the amount of money this law firms paid their secretaries each day of the week.

Find the following matrix product, if po 5-8 9. -5-2 -6 2