What is the product? 5 the 3 by 3 matrix, row 1, column 1, 2 column 2, 3 column 3, 4 row 2, column 1, 9 column 2, negative 1 column 3, negative 7 row 3, column 1, 11 column 2, 5 column 3, negative 3 A
the 3 by 3 matrix, row 1, column 1, 10 column 2, 3 column 3, 4 row 2, column 1, 45 column 2, negative 1 column 3, negative 7 row 3, column 1, 55 column 2, 5 column 3, negative 3 B
the 3 by 3 matrix, row 1, column 1, 10 column 2, 15 column 3, 20 row 2, column 1, 45 column 2, negative 5 column 3, negative 35 row 3, column 1, 55 column 2, 25 column 3, negative 15 C
the 3 by 3 matrix, row 1, column 1, 7 column 2, 8 column 3, 9 row 2, column 1, 14 column 2, 4 column 3, negative 2 row 3, column 1, 16 column 2, 10 column 3, 2 D
the 3 by 3 matrix, row 1, column 1, 7 column 2, 15 column 3, 20 row 2, column 1, 14 column 2, negative 5 column 3, negative 35 row 3, column 1, 16 column 2, 25 column 3, negative 15 Multiply each entry of the matrix by 5: for example, 2 × 5 = 10, 3 × 5 = 15, and −1 × 5 = −5. The resulting matrix is [10, 15, 20; 45, −5, −35; 55, 25, −15], which is choice B.
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