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25.07.2020 •
Mathematics
The total value of a collection of nickels and dimes is $3.05. If the number of nickels is 19 greater than the number of dimes, how many nickels are in the collection?
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Ответ:
N = 33
Step-by-step explanation:
N = D + 19
.05N + .10 D = 3.05
N = 33
D = 14
Ответ:
-2x = 84 - 100
-2x = -16
X = 8