Respuesta :

Answer:

20.4

Step-by-step explanation:

The rule for secants is pretty simple. The product of the distance to one intersection with the circle and the distance to the other intersection with the circle is a constant. (This same rule applies when the secants intersect outside the circle.)

Here, that means ...

8 × 23 = 9 × x

x = 8·23/9 ≈ 20.4 . . . . . divide by 9

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