Step-by-step explanation:
By the property of intersecting chords inside a circle we have:
[tex]x \times 24 = 17 \times 12 \\ \\ \therefore \: 24 {x} = 17 \times 12 \\ \\ \therefore \: {x} = \frac{17 \times 12}{24} \\ \\ \therefore \: {x} = \frac{17}{2} \\ \\ \therefore \: {x} = 8.5 \\ \\ [/tex]
