3 years ago

What is the value of x?

Mathematics

1 answer:

lianna [129]3 years ago

7 0

10x-20+6x+8=180

16x-12=180 combine like terms

16x=192 add 12 to both sides

<em>x=12 </em>divide by 16

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Brian correctly use a method of completing the square to solve the equation X a 2nd plus 7X -11 equals zero Brian‘s first step w

ArbitrLikvidat [17]

Answer:

$(\frac{7}{2})^{2}$

Step-by-step explanation:

Brain correctly use a method of completing the square to solve the equation:

$x^2+7x-11=0$

His First Step is to: Take the Constant Term to the Right Hand Side

$x^2+7x=11$

The Next Step Would be to:

Divide the Coefficient of x by 2
Square It
Add it to both Sides

In this case, the Coefficient of x = 7

Divided by 2 = $\frac{7}{2}$

Squaring It, we have: $(\frac{7}{2})^{2}$

It is this number $(\frac{7}{2})^{2}$ that is added to both sides in the manner below:

$x^2+7x+(\frac{7}{2})^{2}=11+(\frac{7}{2})^{2}$

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4 years ago

(6 + 4(-12) =<br> i need help on this one too..

OlgaM077 [116]

Answer:

-42

Step-by-step explanation:

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3 years ago

ANSWER BOTH!!! A. An international company has 18,600 employees in one country. If this represents 18.2% of the company's employ

bulgar [2K]

Answer:

A. 102,198 employees

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Step-by-step explanation:

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3 years ago

I don’t understand please help!

JulijaS [17]

-5/3 can be turned to a mixed number =-1 2/3
So can 18/11 = 1 7/11
10/4 = 2 2/4 or 2 1/2 simplified
And -3/3 as 1
This may make it easier to graph own the number line

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3 years ago

What is the value of x. Please show work

HACTEHA [7]

It's x=7/99 or x=0.071

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4 years ago