The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using back-substitution.

A. {(4, 4)}
B. {(3, 2)}
C. ?
D. {(5, 4)}


Answer: D

Mathematics

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Solve the problem.Numbers is a game where you bet $1.00 on any three-digit number from 000 to 999. If your number comes up, you get $600.00. Find the expected net winnings.

A. -$1.00 B. -$0.42 C. -$0.50 D. -$0.40

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Identify the group of terms as like or unlike.5m, 4m, -12m

A. Like B. Unlike

Mathematics

Subtract.9.712 - 2.893

A. 12.605 B. 6.919 C. 6.819 D. 7.019

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Solve and graph.

–4x ? 8

Mathematics