D. Reflect across line x =-7
Answer:
Use this formula for these kinda things.
Step-by-step explanation:
Remember The z is the hypathonous, it means the biggest side.

where Z is going to be C
put this all together

put it into calculator, means 373=

therfore take the square root, it will be

which it will be 19.31
9.55 as a mixed number would be 9 11/20.
9.55 = 9 55/100 = 9 11/20
Hope this helps !