Gcompute the inverse of the matrix a: a = 1 a b 0 1 c 0 0 1 an upper (or lower) triangular matrix is called unipotent if it has only 1’s on the diagonal. this exercise proves that the inverse of a 3 × 3, upper triangular, unipotent matrix is unipotent

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

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