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Decoding a Message: The cryptogram below was encoded with a
The last word of the message is
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Chapter 7 Solutions
College Algebra Real Mathematics Real People Edition 7
- 3) please be clear with your answer, thanks!arrow_forwardsolve the matrices produced in the problem below. compute the indicated productarrow_forwardUse A−1 to decode the cryptogram. A = 1 2 2 3 7 9 -2 -1 6 USE THE ABOVE MATRIX TO SOLVE THE CRYPTOGRAM 8 34 75 −19 21 157 −1 10 38 0 13 43 −13 −1 57 0 13 43arrow_forward
- What operation will clear the second column in the following matrix?arrow_forwardPerform the indicated multiplication if possible. (Enter NONE in any unused answer blanks. If the matrices cannot be multiplied, enter NONE in each answer blank.) 10 7 [46] [¹9] -9 5arrow_forward1. Determine the size of the matrix, if not possible, state why. Pay attention to multiplication verses addition when looking for the size! A4X2 – 3B4X2 a. b. A4x2 B2X12 C. B10x3 A10x3arrow_forward
- Three matrices are written below as an example. You write your own matrices by changing the numbers written in these matrices and calculate the following operation for these matrices: 1 AT --B + B. C 2 14 91 [1 A = 5 -2 B = 4 9 ,C = |-8 1 Lo -4. 12 -6 1. 1 AT Find the result of the operation. --B + B. Carrow_forwardencode 12. Maria has four-digit PIN(Personal Identification Number). She needs to send the PIN to her mother by email. Maria decides to the PIN and uses the process: Maria forms a 2 X 2 Matrix A from the digit of her PIN where: A = |1* digit |3d digit 2nd digit 4h digit She chooses then matrix B 20 6 and calculates AB. 3 6 She performs the encoded message by writing down the four elements of AB and following them with the number of digits of each element. 57|, the encoded message would be 125732942222. She then emailed the 32 94 encoded PIN to her mother. For example: if AB = 12 Find: a. AB, if the encoded message that Maria's mother receives is 4148189722232 ?arrow_forwardEncode the message "CRYPTOGRAPHY" using matrix A. Remember to partition the numerical message into groups of two. A = 12 1 3 The coded message is: ...arrow_forward
- Solve for A: You can resize a matrix (when appropriate) by clicking and dragging the bottom-right corner of the matrix. 10 2 8 -8 1 7 7 1 8 -9 -6 -8 50 5 8 A = 000 000 000 +AT = -2 -2 0 6 -8 -7 9 -8 -7 5 -7 5 -9 2 -3 -2 -5arrow_forwardFind, if possible, A + B, A- B, 2A, 2A B, and B + +ZA. A. (If not possible, enter IMPOSSIBLE in any single cell.) A = (a) 35 4 1 2 -1 20 2 A + B 000 (b) A - B 000 (c) 2A 000 (d) 2A B 000 B = ↓ 1 24 2 0 1 2 150 ↓ 1arrow_forwardUse application of matrix operationarrow_forward
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