Respuesta :

LammettHash

Intersecting chords theorem:

[tex]7\cdot7=10x[/tex]

i.e. when two chords intersect, the products of the resulting line segments' lengths are equal. Then

[tex]10x=49\implies x=\dfrac{49}{10}=\boxed{4.9}[/tex]

Answer:

4.9

Step-by-step explanation:

got it right