Mathematics: What is the mean average of 100, 75, 40, 90, 80, 100, 92, 88, 80, 84, 81?

we can make this...andthen...I m sure about my answer, don t matter the order......

What is the mean average of 100, 75, 40, 90, 80, - id1007540908010980729, sophiaa23

Ответ:

daliakreynin

24.05.2020

This should be useful to you http://www.calculator.net/mean-median-mode-range-calculator.html

What is the mean average of 100, 75, 40, 90, 80, 100, 92, 88, 80, 84, 81?

What is the mean average of 100, 75, 40, 90, 80, 100, 92, 88, 80, 84, 81?

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Ответ:

antcobra

24.09.2021

Mathematics

we can make this...

9x+2=0

and

then...

$\boxed{x=-\frac{2}{9}}$

4x^2+35x-9=0

$x=\frac{-b\pm\sqrt{b^2-4*a*c}}{2*a}$

$x=\frac{-35\pm\sqrt{35^2-4*4*(-9)}}{2*4}$

$x=\frac{-35\pm\sqrt{1369}}{8}$

$x=\frac{-35\pm37}{8}$

$x_1=\frac{-35+37}{8}=\frac{1}{4}$

$x_2=\frac{-35-37}{8}=-9$

$\boxed{\boxed{S=\{\frac{1}{4},-\frac{2}{9},-9\}}}$

I'm sure about my answer, don't matter the order...

0,0(0 оценок)

What is the mean average of 100, 75, 40, 90, 80, 100, 92, 88, 80, 84, 81?

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