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2 years ago

6

What's the weighted mean frequency for the following car sales? 2 sold at $25,090, 3 sold at $20,000, 1 sold at $21,475, and 1 s

old at $39,638

2 answers:

RSB [31]2 years ago

7 0

Answer:

The value of weighted mean is $24470

Step-by-step explanation:

Weighted mean $\bar{x}$ is given by

$\bar{x} =\frac{w_1x_1+w_2x_2+w_3x_3+w_4x_4}{w_1+w_2+w_3+w_4}$

In the given question

$w_1=2 ,x_1= \$25090$

$w_2=3 ,x_2= \$20000$

$w_3=1 ,x_3= \$21475$

$w_4=1 ,x_4= \$39638$

Therefore

$\bar{x} =\$[\frac{2\times25090+3\times20000+1\times21475+1\times39638}{2+3+1+1}]$

=> $\bar{x} =\$24470$

Thus the value of weighted mean is $24470

ad-work [718]2 years ago

3 0

23,724 is the answere to your questing

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Given:
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Answer:

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Step-by-step explanation:

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$y=\frac{1728}{x^2}$ ----1

$\frac{\partial(2xy+2(\frac{1728}{x})+2(\frac{1728}{y}))}{\partial y}=0$

$2x-2(\frac{1728}{y^2})=0\\x=\frac{1728}{y^2} \\y^2=\frac{1728}{x}$

Using 1

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A. see above

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