Answer:
x = 5
Step-by-step explanation:
Given two intersecting chords
Then the product of the parts of one chord is equal to the product of the parts of the other chord, that is
2x × 12 = 15(x + 3) , that is
24x = 15x + 45 ( subtract 15x from both sides )
9x = 45 ( divide both sides by 9 )
x = 5
