Find the amount or rate of discount and the sale price after the discount. Round money answers to the nearest cent if necessary.Original price: $570 Rate of discount: 30%

A. $85.50, $484.50
B. $176.70, $393.30
C. $165.30, $404.70
D. $171.00, $399.00

Answer: D

Mathematics

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B.  + C
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 3x - 8y - z = -1  x + 8y + 4z = 32 8x + y + z = 38

A. (-4, 1, 8) B. (4, 1, 5) C. (4, 5, 1) D. No solution

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Solve for the indicated letter.Solve S = x2 + y2 - 8x + 10y - 4 for x.

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B. x = 4 ± 
C. x = 4 ± 
D. x = 4 ± 

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Mathematics

Multiply. Assume all variables represent nonnegative real numbers. ? 

A. 2
B. x
C.
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Mathematics