Skyler Randolph

Mathematics

17 June, 12:01

Amir encoded a secret phrase using matrix multiplication. Using A = 1, B = 2, C = 3, and so on, he multiplied the clear text

code for each letter by the matrix C-

to get a matrix that represents the encoded text. The matrix representing the

1-4

10-26 - 49 93 - 13 - 50

encoded text is

What is the secret phrase? Determine the location of spaces after you

| 16 - 33 - 63 16 9 - 10 - 65]

decode the text.

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