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Keith_Richards [23]

3 years ago

14

A bag contains pennies, nickles, dimes, and quarters.There are 50 coins in all. Of the coins, 10% are pennies and 32% are dimes.

There are 9 more nickles than pennies. How much money does the bag contain?

1 answer:

ikadub [295]3 years ago

8 0

10 pennies, 16 dimes, 19 nickles.
Sorry I'm not from US so I don't know your currency. Sorry about that. Hope what I have given you is enough. :)

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A radio is being discounted 40%. If the sale price of the radio is $31.02, what was the original price of the radio?

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

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$\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128$

Then, the confidence interval can be calculated as:

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3 years ago