Find the difference.12 - 7.55

A. 19.55
B. 4.45
C. 4.55
D. 3.95


Answer: B

Mathematics

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Solve the problem. Round to the nearest cent or tenth of a percent.An item has a 39.5% markup based on selling price. What is the equivalent markup percent based on the cost?

A. 28.3% B. 65.3% C. 34.7% D. 71.7%

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Provide an appropriate response.Simplify; express the answer without radicals:  

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Use the problem-solving strategy to solve the problem and find the unknown number.If 3 times a number is added to -10, the result is equal to 13 times the number.

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Mathematics