Inspect them and make sure that they are exact copies then delete one if they are the same.
Answer:
C (2.5)
Explanation:
int(3.5) = 3
So, using order of operations, (3/2)+1=2.5
Please provide photos for your question.
You can try downloading some kind of computer cleaner like CleanMyMac X free version, also definitely restart your computer if you haven't done so already.
Answer:
Because it helps you prove that you're you to third parties who wouldn't know otherwise. A CA helps you to establish trust with others because they're trusted for issuing valid, reliable certificates — and that trust is integral to public key infrastructure (PKI).
Explanation:
with this info I believe it is a A and C