18
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Matrices and Their Inverses

Question 18 • AVA: Algebra II w/ Statistics - S1/Q1

Internet sites often ask for a secret phrase to recover lost passwords. Jason encoded a secret phrase using matrix multiplication. He multiplied the clear text code for each letter by the matrix: The matrix representing the encoded text is:Jason’s secret phrase is:

Question illustration
Answer
A
CATS HAVE MANY LIVES
B
CATS RULE DOGS DROOL
C
BE HAPPY DO MATH
D
MORE MATH MAKE SMART
E
MORE MATH MORE HAPPY
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