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yanalaym [24]
3 years ago
11

Help me find the perimeter of this square. if you can do it step by step please!

Mathematics
1 answer:
Kruka [31]3 years ago
8 0

Answer:

396

Step-by-step explanation:

It's a square.

That means that all four sides are equal.

So the two expressions you have been given are equal.

2.5x + 76.5 = 12x - 9            Subtract 2.5x from both sides.

<u>-2.5x               -2.5x</u>  

          76.5 = 9.5x - 9          Add 9 to both sides

          <u>  9                 9</u>

          85.5 = 9.5x              Divide by 9.5

       85.5/9.5 = x

x = 9

That is just the value for x. It is not the answer

Side = 12x - 9

Side = 12*9 - 9

Side = 108 - 9

Side = 99

The perimeter = 4 * Side

The perimeter = 4 * 99

Perimeter = 396

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Answer:

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4 0
3 years ago
What is the solution of |x- 5|-2=10?
Lelu [443]

Answer:

x=17, x=-7

Step-by-step explanation:

Step  1  :

Rearrange this Absolute Value Equation

Absolute value equalitiy entered

     |x-5|-2 = 10  

Another term is moved / added to the right hand side.

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Step  2  :

Clear the Absolute Value Bars

Clear the absolute-value bars by splitting the equation into its two cases, one for the Positive case and the other for the Negative case.

The Absolute Value term is |x-5|

For the Negative case we'll use -(x-5)  

For the Positive case we'll use (x-5)  

Step  3  :

Solve the Negative Case

     -(x-5) = 12  

    Multiply

     -x+5 = 12  

    Rearrange and Add up

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    Multiply both sides by (-1)

     x = -7  

    Which is the solution for the Negative Case

Step  4  :

Solve the Positive Case

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    Rearrange and Add up

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Step  5  :

Wrap up the solution

x=-7

x=17

8 0
3 years ago
Read 2 more answers
(04.05)
algol13
So I think it is Dwat u think it is
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Answer:

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Step-by-step explanation:

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8 0
2 years ago
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Answer:

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6 0
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