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Arlecino [84]
3 years ago
11

A pipe extends from sea level to a location under the sea. Four-fifths of the way down the pipe, there is a leak. The leak's ele

vation is −3.6 meters. What is the elevation of the end of the pipe that is under the sea? Enter your answer as a decimal or as a mixed number in simplest form in the box.
Mathematics
1 answer:
allochka39001 [22]3 years ago
3 0

Answer:

Step-by-step explanation:

4/5  is equivalent to -3.6 m

So 1 ( 5/5) is equivalent to -3.6 / 4/5 * 5/5

= -3.6 / 0.8 * 1

= -4.5 m.

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In the translation T of the graph below, use the figure to describe the following transformation. T T-1: (x, y) ( x, y) ( x + 3,
Serhud [2]

Answer:

(X - 3,  Y - 1).

3 0
3 years ago
In a random sample of 8 ​people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 95
Elina [12.6K]

Answer: Margin of error = 6.58

Confidence interval =  (26.91, 40.08)

Step-by-step explanation:

Since we have given that

Sample size n = 8

Sample mean = 33.5 minutes

Population standard deviation = 9.5 minutes

At 95% confidence interval,

α = 0.05

t = 1.96

So, Margin of error is given by

t\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{9.5}{\sqrt{8}}\\\\=6.58

Confidence interval would be

Lower limit:

\bar{x}-6.58\\\\=33.5-6.58\\\\=26.91

Upper limit:

\bar{x}+6.58\\\\=33.5+6.58\\\\=40.08

Hence, the interval would be (26.91, 40.08)

But at standard deviation 7.2 minutes, the confidence interval was (27.5, 39.5)

Confidence interval using the standard normal distribution is wider than the confidence interval using t distribution.

3 0
3 years ago
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Zina [86]
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4 years ago
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Hello

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