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What is BC 

 Nov 21, 2017
 #1
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Since angle ABC  = angle BCA....the sides opposite these are also equal...so

 

5x + 11  =  8x  - 4       add 4 to both sides, subtract 5x from both sides

 

15  =  3x        divide both sides by 3

 

5  = x

 

So....BC  = 4(5) - 2  = 20 - 2   = 18 

 

 

cool cool cool

 Nov 21, 2017

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