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Reil [10]
3 years ago
9

Sonji has $5.25 in nickels and dimes . The coin value can modeled by the equation 0.10+0.05n=5.25, where d represents the number

of dimes and n represents the number of nickels . If sonji has 21 dimes, how many nickels does she have ?
Mathematics
1 answer:
Lyrx [107]3 years ago
6 0
63

.10d + .05n = 5.25

.10(21) + .05n = 5.25

2.1 + .05n = 5.25

.05n = 3.15

n = 3.15/.05

n = 63
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