Kat has 19 coins, all quarters and dimes, that are worth a total of $4. The system of equations that can be used to the number of quarters,q, and the number of dimes,d, she has shown

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asked Nov 28, 2017 113k views

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Kat has 19 coins, all quarters and dimes, that are worth a total of $4. The system of equations that can be used to the number of quarters,q, and the number of dimes,d, she has shown

Mathematics
high-school

Aakash Basu asked

by Aakash Basu

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Explanation:

Havogt answered Nov 30, 2017

by Havogt

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q + d=19 0.25q + 0.1d=4
(d) -0.1(q + d=19) 0.25q + 0.1d=4 Opposites cancel -0.1q -0.1 d=1.9 0.25q + 0.1d=4

Aseure answered Dec 4, 2017

by Aseure

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