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3 years ago

X+3=15 can some body solve this for me

Mathematics

2 answers:

jekas [21]3 years ago

4 0

x+3=15

Subtract 3 from both sides

x+3-3=15-3

x=12

I hope that's help !

Check my answer

Replace x by 12

12+3=15

15=15

So... Yes my answer is correct !

kifflom [539]3 years ago

3 0

X+3=15 = x+3-3=15-3
you need to isolate the variable... x
so now it is x=12
hope that helped!

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3 years ago

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3 years ago

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3 years ago

What is the mean absolute deviation?

Lostsunrise [7]

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Step-by-step explanation:

The formula for MAD is attached in the picture.

x_i are the values (data)

x bar is the mean

n is the number of numbers (data)

For figuring out MAD, basically, <em>we subtract the mean from each of the values respectively and take the absolute value and SUM for all of the numbers in the data set. Then we divide by n, the number of numbers.</em>

<em />

Let's do this:

MAD = $\frac{|2-3|+|2-3|+|2-3|+|2-3|+|3-3|+|3-3|+|3-3|+|4-3|+|4-3|+|5-3|}{10}\\=\frac{1+1+1+1+0+0+0+1+1+2}{10}\\=\frac{8}{10}=0.8$