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Mazyrski [523]
3 years ago
6

Determine the value of x. Assume the segments that appear tangent are tangent

Mathematics
1 answer:
siniylev [52]3 years ago
4 0

9514 1404 393

Answer:

  x = 12

Step-by-step explanation:

Segment lengths of each chord have the same product.

  (x -2)(x +6) = 9×20

  x² +4x -12 = 180

  x² +4x +4 = 196 . . . . . add 16 (complete the square)

  (x +2)² = 14²

  x +2 = 14 . . . . . . . . . . . positive root is the only one useful

  x = 12

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