Given:


Since R is the midpoint of the line, we can set XR equal to RY and solve for x.





Now we know what x is. We can plug in x to RY and XR and then add it all together to find XY. Let's find XR:


Let's find RY now:



Since we know that:

We can plug in our answers:

Final answer:

Answer:
all real numbers greater than zero
Step-by-step explanation:
The square root of a number must be greater than or equal to zero
sqrt(x) ≥0
Squaring each side
x ≥0
This means the domain is all real numbers greater than or equal to zero
I would go with all real numbers greater than zero since it is the closest answer
Because they have the same measurements and are equal
I don't know if this is right but don't get mad I think it would be -5