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nadezda [96]
3 years ago
14

Isabel bought a new jacket for $48 before tax. She paid 6.5% in sales tax. How much was the sales tax?

Mathematics
1 answer:
AleksandrR [38]3 years ago
6 0
C) $3.12
$48*.065=$3.12
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By concepts of polynomials and systems of linear equations, the constants c and d of the expression p(x) = x⁴ - 5 · x³ - 7 · x² + c · x + d are 29 and 30.

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A value x is a root of a polynomial if and only if p(x) = 0. We must replace the given equation with the given roots and solve the resulting system of <em>linear</em> equations:

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By concepts of polynomials and systems of linear equations, the constants c and d of the expression p(x) = x⁴ - 5 · x³ - 7 · x² + c · x + d are 29 and 30.

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