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babymother [125]
3 years ago
13

A barrel contained 60 gallons of water. Water leaked out of the barrel at a rate of 5 gallons every 3 days. how may day would it

take to run out of water if we added 15 gallons of water on the sixth day
Mathematics
2 answers:
Ilia_Sergeevich [38]3 years ago
4 0

Answer:

It would take 45 days for all of the water to run out.

Step-by-step explanation:

Every 3 days, the barrel leaks 5 gallons. After the first three days, it would be 55 gallons. After 6 days, it would have been 50 gallons, but 15 gallons of water was added (bringing it up to 65 gallons). Going in increments of 3 (for 3 days), count backwards by 5. (Ex. 9 = 60, 12 = 55, 15 = 50, etc.) The barrel is completely empty after 45 dayd.











Tanzania [10]3 years ago
3 0
60-5-5=50+15=65-5-5-5-5-5-5-5-5-5-5-5-5-5
15 gallons
15×3=45
45 days
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In a random sample of 250 students, 150 were in favor of longer hours at the school library. At 98% level of confidence, what is
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0.072 is the margin of error.

<h3>What is standard error?</h3>

The standard error (SE) of a statistic is the standard deviation of its sampling distribution or an estimate of that standard deviation.

According to the question,

In a random sample of 250 students,

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The standard error of p(the sample proportion) is (approximately)

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Therefore,

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Learn more about is standard error here:

brainly.com/question/14524236

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