Mathematics, 14.07.2019 14:30 vavzincak

Aman has 30 coins, which are all dimes or nickels. their combined value is $2.10. how many coins of each kind does he have? let x = the number of nickels. let y = the number of dimes. which of the following matrices could be used to solve the problem

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Aman has 30 coins, which are all dimes or nickels. their combined value is $2.10. how many coins of...

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