3 years ago

What is the solution to this equation?

Mathematics

2 answers:

katrin2010 [14]3 years ago

8 0

Answer:

It would be A. X= 125

Step-by-step explanation:

25*5=125

Maksim231197 [3]3 years ago

4 0

Answer:a. x =125

Step-by-step explanation:

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Answer: The margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

Step-by-step explanation:

Since we have given that

Sample size = 400

Mean = $357.75

Standard deviation = $37.89

At 95% confidence level, z = 1.96

We first find the margin of error.

Margin of error is given by

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95% confidence interval would be

$\bar{x}\pm \text{margin of error}\\\\=357.75\pm 3.71\\\\=(357.75-3.71,357.75+3.71)\\\\=(354.04,361.46)$

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Rename the fraction 1/4 using the least common denominator,12

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Answer:

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Step-by-step explanation:

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