<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B28%7D%20" id="TexFormula1" title=" \sqrt[3]{28} " alt=" \sqrt[3]{28} " ali

Elena-2011 [213]

3 years ago

gn="absmiddle" class="latex-formula">
28

Mathematics

1 answer:

zloy xaker [14]3 years ago

6 0

I’m not understanding your question maybe explain it differently?

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The gas mileage for a certain model of car is known to have a standard deviation of 6 mi/gallon. A simple random sample of 49 ca

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Answer:

The answer is "(27.030,29.770)"

Step-by-step explanation:

$(\bar{x}) = 28.4$

$(n)= 49$

$(\sigma) = 6$

$(CI) = \bar{x}\pm z^*_{\frac{\alpha}{2}} \frac{\sigma}{\sqrt{n}}$

$z^*_{\frac{\alpha}{2}}\ for \ 89\%\ confidence = 1.598 \\\\\text{Using z table }\\\\ NORM.S.INV(1-\frac{(1-0.89)}{2})$

$CI = 28.4 \pm 1.598 \times \frac{6}{\sqrt{49}}=(27.030,29.770)$

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1.) D

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Find the GCF of the following literal terms. xxyyyzz and xxxxzzz

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The lengths and widths of two rectangles are proportional. One

Rashid [163]

The width of the rectangle would be 6 times the first rectangle and the length would be 8 times the first rectangle.

<u>Explanation:</u>

Given:

Two rectangles are proportional.

Length and width of 1 rectangle = 6 : 8

Dimensions of the other rectangle = ?

Let length and width of the other rectangle be x : y

According to the question:

$\frac{6}{8} :\frac{x}{y}$

$\frac{6}{8} X \frac{y}{x}$

So, the width of the rectangle would be 6 times the first rectangle and the length would be 8 times the first rectangle.

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3 years ago