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Neko [114]
4 years ago
12

A jar contains n nickels and d dimes. There are 28 coins in the jar,and total value of the coins is $2.20. How many nickels and

dimes are in the jar?
Mathematics
1 answer:
cupoosta [38]4 years ago
5 0
<span>There are 12 nickels and 8 dimes in the jar </span>
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How to do: 4(x+7)=2(x+7)
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4x+28=2x+14 you move the x termes to the left and other numbers to the right look:

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Answer:

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2 years ago
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aev [14]

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\bar x=\mu+z\cdot \sigma/\sqrt{n}

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Thus, the number of games must a store sell in order to be eligible for a reward is 135.

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3 years ago
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fomenos
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