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Need help with this. I'm pretty sure it's just 4x-4=25 (since 30-25=5 and the triangles are similar), then you solve for x?

Just looking for some help here.

Guest Mar 15, 2018
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There are a few ways to think about this....

 

△JKL  is similar to  △MNP  by AA similarity.

 

So each side of  △MNP  is some scale factor times the corresponding side of  △JKL  .

 

MN  =  JK * s    where  s  is the scale factor.

 

30  =  25 * s

 

30 / 25  =  s

 

So each side of  △MNP  is  30/25 times the corresponding side of  △JKL  .

 

MP  =  30/25 * JL

 

4x - 4  =  30/25 * 20

 

4x - 4  =  24

 

I'll let you finish solving for  x .  smiley

hectictar  Mar 16, 2018

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