The cryptogram below was encoded with a 2 x 2 matrix. 44 31 35 30 13 13 15 10 75 55 51 37 29 22 60 40 69 51 42 28 The last word of the message is RON_. What is the message?

Compute each matrix sum or product if it is defined. If an expression is undefined, explain why. Let A = D= 25 -25 and E= 5 3 A + 2B, 2C-3E, DB, EB OA. A + 2B = -5 23 ²³] ·- 7 - - 2]---[-22] B = C = 4 Compute the matrix sum A + 2B. Select the correct choice below and, if necessary, fill in the answer box within your choice. (Simplify your answer.) OB. The expression A + 2B is undefined because B is not a square matrix. O C. The expression A + 2B is undefined because A and 2B have different sizes. O D. The expression A + 2B is undefined because A is not a square matrix. 2 0 -3 5 -5

Please select abc or d

Suppose A is a 2 × 2 matrix with real number entries such that AB=BA for all 2 × 2 matrices. What relationships must exist among the entries of A?  ineed a clear answer because i have a matrix answer in my book like the pic i uplo