brendavcallejas brendavcallejas
  • 25-06-2018
  • Mathematics
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What is the value of x?

What is the value of x class=

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sqdancefan
sqdancefan sqdancefan
  • 25-06-2018
The rule for secants tells you
  EC·ED = EB·EA
  (x+4)(x+5) = (x+1)(x+12)
  9x+20 = 13x+12 . . . . . . simplify, subtract x²
  8 = 4x . . . . . . . . . . . . . . add -12-9x
  2 = x

The value of x is 2.
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