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Eric H. answered • 02/20/21
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Faiz S.
asked • 02/17/21Kevin has 37 coins in his locker, which are all either dimes or nickels. He knows that he has $2.80 in total. How many dimes does he have, and how many nickels does he have.
Let x+ Nickels, and let y=dimes.
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Raymond B. answered • 02/17/21
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Math, microeconomics or criminal justice
dimes = 19, nickels = 18
D+N = 37
10D + 5N = 280
5D + 5N =195
5D = 95
D =95/5 = 19 dimes
N = 37-19 = 18 nickels
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