The answer is the first one because you have to multiply the outsider five to the other numbers inside the parenthesis. You don't add them or subtract them because they don't have the same variable
The area of the trapizoif is 97.5
<span>What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 125 pm? </span>393pm
10x4=40. i dunno thats what i got from google lolll..
7 + 28n + 4
28n + (7 + 4)
28n + 11