anonymous
  • anonymous
AB and BC are tangent to circle D. Find x if AB=3x+2 and BC=x+12. Find x.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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anonymous
  • anonymous
From any point outside a circle, only two, equally long tangent lines can be drawn to a circle.
anonymous
  • anonymous
So set the two lengths as equal and solve for x from there

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anonymous
  • anonymous
3x+2=x+12 ?
anonymous
  • anonymous
Yep
anonymous
  • anonymous
ok..
anonymous
  • anonymous
add 3x?
anonymous
  • anonymous
You can't add 3x. Your goal to solve for x is to isolate it. To do so, move the term with a variable to one side and the constant to the other. To do so, subtract both sides by x then subtract both sides by 2 and simplify from there to get x completely on it's own.
anonymous
  • anonymous
3x+2=x+12 3x-x+2-2=x-x+12-2 2x=10 x=__
anonymous
  • anonymous
What you do on one side of an equation, you must do on teh other side to keep the equation the as having teh same value. By doing so, you alter the form of teh equation while keeping teh meaning.
anonymous
  • anonymous
5?
anonymous
  • anonymous
Yeah
anonymous
  • anonymous
thank you!! :)
anonymous
  • anonymous
Your welcome

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