Combine like terms whenever possible. Write the result with descending powers.-5m9 + 7m7 - 3m4 + 13m9 - 11m7

A. 300m
B. 8m9 - 4m7 - 3m4
C. 15m20
D. Cannot be simplified


Answer: B

Mathematics

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A. - 
B. - 
C.
D.

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Provide an appropriate response.Select a decimal percent with two digits and write it as a fraction. Select a fraction with a three-digit denominator and write it as a percent. Explain each step of your work.

What will be an ideal response?

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