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3 years ago

Find mean of the data: 20,50,30,40,60,80.

Mathematics

1 answer:

Effectus [21]3 years ago

4 0

Step-by-step explanation:

Mean= The data points that add up, or, the sum of all data points, divided by the number of data points, will give you the answer,

20+50+30+40+60+80 would be

100+40+60+80 which is

200.

Since there are 6 numbers in the problem, we do

200/6

which will give us

33.33 etc. (33.3333333333 on and on forever)

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3 years ago

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Step-by-step explanation:

I like to put these in the form f(x) = 0. We can do that by subtracting the right side. Common factors can be cancelled from numerator and denominator, provided they are not zero.

$\dfrac{7}{x+3}+\dfrac{3}{x-3}-\dfrac{x}{x-3}=0\\\\ \dfrac{7(x-3)+(x+3)(3-x)}{(x+3)(x-3)}=0\\\\\dfrac{(x-3)(4-x)}{(x-3)(x+3)}=0\\\\ \dfrac{4-x}{x+3}=0\qquad x\ne3\\\\x=4 \qquad\text{equate the numerator to zero, add $x$}$

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3 years ago

Find mean of the data: 20,50,30,40,60,80. ​

Find mean of the data: 20,50,30,40,60,80.