Apiggy bank contains 70 coins. the coins are dimes
and nickels worth $5.50. use substitution t...
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Mathematics, 08.12.2019 23:31 jakepeavy70
Apiggy bank contains 70 coins. the coins are dimes
and nickels worth $5.50. use substitution to solve the system of equations
to find how many dimes and nickels are in the piggy bank.
d+n= 70
0.1d + 0.05n = 5.5
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