riedelk658kater80 riedelk658kater80
  • 14-11-2016
  • Mathematics
contestada

 K is the midpoint of . if = 3x + 1 and     , find the length of

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melhaha00 melhaha00
  • 14-11-2016
3x + 1 = 1/3x + 9 Multiply through by 3 
9x + 3 = x + 27 Subtract x 
8x + 3 = 27 Subtract 3 
8x = 24 
x = 3 

AK = 3*3 + 1 = 10 

AB = 2*AK = 20
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