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14-12-2018
Mathematics

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May you help me out someone

May you help me out someone class=

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

14-12-2018

Answer:

x = 4 1/2 or 4.5 cm

Step-by-step explanation:

We know the perimeter of the rectangle is given by the formula

P =2(l+w)

19 = 2(2.5 + (2.5+x))

Simplifying

19 = 2( 5+x)

Distribute

19 = 10 + 2x

Subtract 10 from each side

19-10 = 10-10 + 2x

9 = 2x

Divide each side by 2

9/2 = 2x/2

4.5 = x

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