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igor_vitrenko [27]
3 years ago
9

Help me with this math for 50 points

Mathematics
2 answers:
maw [93]3 years ago
7 0

Answer:1,459.20

Step-by-step explanation:multiply by fraction then divide by answer

Lady_Fox [76]3 years ago
6 0

The hot tub takes in 1,520 watts everyday to keep its water warm. A kilowatt has 1,000 watts (hence kilo means 1,000). 1,520 divided by 1,000 equals 1.520. However, this isn't free electricity - Each kilowatt costs 8 cents or 0.08 of a dollar. 1.520 x 0.08 = 12.160 or $12.16. We aren't done yet! This hot tub runs for 4 months (and we are assuming these months exactly have 30 days each). 4 x 30 = 120. $12.16 x 120 = $1,459.20. In order to keep the hot tub running, you need to pay 1,459.20 for all the kilowatts of electricity it takes.

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And we can find this probability with the following difference:

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And we can find this probability with the following difference:

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Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

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If we apply this formula to our probability we got this:

P(2.9

And we can find this probability with the following difference:

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