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3 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]3 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]3 years ago

3 0

23,724 is the answere to your questing

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3 years ago

-1/2 divided by 1 3/4 as a fraction in simplest form

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$\Large\textsf{\textbf{Answer\;:}}}$

$\large\textsf{refer\:to\:the\:"calculations"\:section\:of\:this\:ans}$

$\Large\textsf{\textbf{Calculations\::}}$

$-\displaystyle\frac{1}{2} :1\frac{3}{4}$

First , convert the mixed number (the fraction we are dividing by in the given maths problem) into an improper fraction .

Multiply the whole part (1) times the denominator (4) and add the numerator . The result is the numerator of our fraction , and the denominator stays the same .

So now our maths problem looks as follows :

$-\displaystyle\frac{1}{2} :\frac{7}{4}$

Now turn the fraction you are dividing by over :

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Now multiply the numerator of the first fraction times the numerator of the second fraction :

4

Perform the same operation with the denominators :

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So the result is :

$-\displaystyle\frac{4}{14}$

Since the above fraction is not in it's simplest form , we divide the top and bottom by 2 (a common factor of both 4 and 14) :

$-\displaystyle\frac{2}{7}$

$\footnotesize\textsf{hope\:helpful~}$

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