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Elodia [21]
3 years ago
12

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 o

f quarters,q, and the number of dimes,d, she has shown
Mathematics
1 answer:
Luden [163]3 years ago
7 0
<span>q + d=19 0.25q + 0.1d=4 
</span><span> (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</span>
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