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Mathematics 17 Online
OpenStudy (anonymous):

Which system describes the following situation? Craig has $0.80 in nickels (n) and dimes (d). He has four more nickels than dimes. d+n=4 10d+5n=80 n-d=4 10d+5n=80 d-n=4 10d+5n=80 d+n=4 10d-5n=80

OpenStudy (anonymous):

Do you have a guess?

OpenStudy (anonymous):

the 1st

OpenStudy (anonymous):

??

OpenStudy (anonymous):

not quite

OpenStudy (anonymous):

we can eliminate the first one because his dimes and nickles will not sum to 4. That information was not given.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

o the second

OpenStudy (anonymous):

correct! well done

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