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Maria has a box of 20 cookies. She gives 2 cookies to each friend. Which expression shows the number of cookies Maria has left after giving cookies to m friends? A. 2m - 20 B. 20 - 2m C. 20m - 2 D. 20
answered
Jun 29, 2017
Mathematics
middle-school
5
votes
195k
views
How do I solve (3+i)(3-i)
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Jun 16, 2015
Mathematics
high-school
5
votes
123k
views
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