- anonymous

A triangle has one side that measures x, and the other two sides each measure 4 inches less than x. The perimeter is 19 inches.
What is the measure of x?
2
3
5
9

- jamiebookeater

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- anonymous

- anonymous

- anonymous

@MICAAAAAAAAAAAAAAAAAA

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## More answers

- anonymous

This is a hard one for me.

- anonymous

Sorry I can't help you!

- anonymous

@pooja195 Help her please.

- AbdullahM

Hi!

- anonymous

Hey

- AbdullahM

Do you know what perimeter means?

- anonymous

Not really.

- anonymous

isn't it like the base.

- misssunshinexxoxo

Which answer do you believe it is?

- misssunshinexxoxo

x+(x−4)+(x−4)=19

- AbdullahM

The perimeter means you add up all the three sides.

- anonymous

@misssunshinexxoxo To be honest i'm not sure. I don't know how to work it out.

- AbdullahM

So, what is `4 inches less than x` mean? (In like an equation)

- anonymous

\[4

- misssunshinexxoxo

Yes

- anonymous

okay. so what next

- AbdullahM

No, that means
`x-4`
4 inches less than x means we have to do subtraction.

- anonymous

oh

- anonymous

so 19-4?

- AbdullahM

So two of this sides are \(\sf x-4\) and one side is x
So that means since the perimeter equals to 19:
\(\sf\Large (x-4) + (x-4) + x=19\)

- anonymous

So it would be 9?

- anonymous

@AbdullahM how do i post a different question?

- AbdullahM

You have to first close this question and open another one.

- anonymous

Okay.

- anonymous

Thank you for helping me.

- AbdullahM

Also, show me your work for that last equation...

- anonymous

okay

- AbdullahM

\(\sf\Large (x-4) + (x-4) + x=19\)
we can make that:
\(\sf\Large x-4 + x - 4 + x = 19\)
Add like terms and then isolate x.

- anonymous

(x+x+x)+(−4+−4)=19
there are 3 x's.
-4+-4=-8
3x+−8=19
3x−8=19
then I added 8 to both sides.
3x=27
then I divide both sides by 3
x=9

- AbdullahM

Great job! :D

- anonymous

:)

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