Answer:
The magnitude of -5+12i is 13.
Explanation:
The magnitude of a complex number is its distance from the origin in the complex plane.
It can be calculated using the following formula:

where z is the complex number, a is the real part of z, and b is the imaginary part of z.
In this case, the complex number is -5+12i, so the real part is -5 and the imaginary part is 12.
Plugging these values into the formula, we get:



Therefore, the magnitude of -5+12i is 13.