Answer:
The average weight of new born otter was, 
Step-by-step explanation:
Let average weight of new born otter be x.
As per the given statement: At birth it's weight was 7/8 kilograms which is 9/10 kilogram less than the average weight of a new born otter in the aquarium
"
kg less than average weight of a new born otter" means 
As per the given information, we have;

Add
both sides, we have;

Take LCM of 8 and 10 is, 40
⇒
Simplify:

Therefore, the average weight of new born otter was, 
Answer:
3/48 or reduced 1/16
Step-by-step explanation:
1/3 x 3/4 = 3/48
Reduced:
3/48 ÷ 3/3 = 1/16
Only put the reduced fraction if it asks.
Hope this helps :)
Answer:
No.
Step-by-step explanation:
We assume you're concerned with

The sum of a non-negative number and a positive number cannot be zero. The square root is always non-negative.
I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:

Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.