GenTorr
  • GenTorr
Choose a number line to model the following situation: Marcy owed her friend Erica $25 dollars and paid her back $15.
Mathematics
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
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GenTorr
  • GenTorr
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GenTorr
  • GenTorr
@Michele_Laino
triciaal
  • triciaal
hint: when you owe you are in the red you are negative when you add you go right

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calculusxy
  • calculusxy
Zero would be the amount that Marcy had previously. However, she borrowed $25 from her friend, which means that from her balance, she knows that she needs to give back that $25 (thus it is negative). However, she has only paid back $15, that means that she has only $10 remaining to give back and then she will get out from the negative range, so the arrow went to the right. From this information that I have given you, can you tell me what number line that would be?
Michele_Laino
  • Michele_Laino
your problem can be modeled by this expression: \[\Large - 25 + 15\] since negative numbers are used to represent debts, whereas positive numbers are used to represent credits
GenTorr
  • GenTorr
i think its the first one

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