I’m pretty sure it would be a and b
Yes
The rule to check if a triplet of numbers can represent the sides of a triangle is the following: the sum of the length of two sides must exceed the third one.
This happens for all possible couples in your case:



Answer:
8
Step-by-step explanation:
Might be terribly wrong since it's been a while that I've done fractions, but I got -11/20. Hope this helps!!!