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34kurt
3 years ago
10

5. Louis has 21 coins in his pouch, how many nickels and dimes does he have if he has $1.35?

Mathematics
1 answer:
PolarNik [594]3 years ago
3 0
N + d = 21
0.5n + 0.10d = 1.35
5n + 10d = 135
d = 21-n
5n + 210 - 10n = 135
-5n = -75
n = 15
d = 6
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Answer:

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Step-by-step explanation:

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Now we take logarithms to make this a linear equation.

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Dividing by the coefficient of t gives us ...

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It would take about 14.1 years for the value to reach $13,060.

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