Final answer:
The numerical length of IJ is 2x + 9.
Step-by-step explanation:
Given that HI = x, IJ = 2x + 9, and HJ = 4x, we need to determine the numerical length of IJ.
To find the length of IJ, we simply substitute the given values into the equation. Therefore, IJ = 2x + 9 = 2(x) + 9 = 2x + 9.
So, the numerical length of IJ is 2x + 9.