# Negative 2 left parenthesis 4 x minus 3 right parenthesis minus 4 x equals 126 What is the value of x

###### Question:

What is the value of x

## Answers

22 - 4x = 12x + 126

+4x = +4x

22 = 16x + 126

-126 = - 126

-104 = 16x

/16 /16

-6.5 = x

[tex]22-4x=12x+126\ \ \ \ |Subtract\ 12x\\\\ 22-16x=126\ \ \ |Subtract\ 22\\\\ -16x=104\ \ \ |Divide\ by\ -16\\\\ x=-6,5\\\\Solution\ is\ x=-6,5.[/tex]

[tex]22-4x=12x+126\ \ \ \ |Subtract\ 12x\\\\ 22-16x=126\ \ \ |Subtract\ 22\\\\ -16x=104\ \ \ |Divide\ by\ -16\\\\ x=-6,5\\\\Solution\ is\ x=-6,5.[/tex]

Complete Question

The complete question is shown on the first uploaded image

The coefficient is [tex]r =0.81[/tex]

Step-by-step explanation:

From the question we are told that

[tex]cov(x, y )= 1260[/tex]

[tex]s_x^2 = 1600[/tex]

[tex]s_y^2 = 1225[/tex]

Generally the coefficient of determination is mathematically represented as

[tex]r = [ \frac{cov(x,y)}{ \sqrt{s_x^2} * \sqrt{s_y^2} } ]^2[/tex]

substituting values

[tex]r = [ \frac{ 1260}{ \sqrt{1600} * \sqrt{1225} } ]^2[/tex]

[tex]r =0.81[/tex]

[tex]If c o v (x comma space y )space equals space 1260, s subscript x squared equals 1600, and s subscri[/tex]

Hey there!

To figure out what "x" means, you can divide the numbers 126 and 14 . . .

126 divided by 14 = 9

9 x 14 = 126

9 = x

x = 9

Hope this helps you.

Have a great day!

The most easiest step that we could so here is to first simplify them. We would simplify the term by its result.

(126)÷14=9.

By dividing these both, we would the new able to solve what would (x) be.

Therefore, x= 9.

14 x's 9 = 126