Answer:
k ≥ -18
Step-by-step explanation:

Answer:
C
Step-by-step explanation:
I am guessing that's it.
You calculate an answer by multiplying each side by each other. hope this helps.
Answer:
8
Step-by-step explanation:
Answer:

Step-by-step explanation:
This problem can be solved using the pythagorian theoreme:

Where:



We isolate our incognita an we get:

We supplant with the given data:




