Answer:
I know the answers but why not atleast try to do it by yourself first. Math is really fun once you start trying it.
The short answer is: when their fractions add up to full integers.
For examples, two halves make up a whole, or

so the mixed numbers with those will add up to full integers:

but if they don't add up to an interger, the whole sum won't be an integer:
Answer:
36
Step-by-step explanation:
9+9+9+9=36 or 9 times 3
HOPE IT HELPS Y'ALL:)
U^2 + 2 (u) (5/2) + 25/4 = (u +5/2)^2
answer is B. 25/4
Answer:
Good Luck!
Step-by-step explanation: