3 years ago

Please help I have been trying to solve this

Mathematics

1 answer:

Olin [163]3 years ago

7 0

The intersecting chord theorem says

$AY \cdot BY = CY \cdot DY$

$AY = \dfrac{ CY \cdot DY}{BY} = \dfrac{6 \cdot 12}{9} = 8$

$AB = AY + BY = 8 + 9 = 17$

Answer: 17

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