Answer:
14
Step-by-step explanation:
= 
18 x 35= 45x
630=45x
x=14
false, false, true, false
Because 8/8=1 and 16/8= 2
Answer:
I think it's D, I'm not really sure, but that's my best answer.
Step-by-step explanation:
None.
Not sure what your question is asking. 9, 16, and 64 are perfect squares which show up a lot when using Pythagorean theorem, and are usually called "Pythagorean triplets" but they add up. Ex:

which is true, so (3, 4, 5) are a Pythagorean triplet.
Can you give more context to your question?