Which expression represents the determinant of A={-3 6 1 -6}
det(A) = (–3)(–6) – (1)(6)
det(A) = (–3)(–6) + (1)(6)
det(A) = (1)(6) – (–3)(–6)
det(A) = (–3)(–6) + (–1)(–6)

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step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3