Answer:
54.
Step-by-step explanation:
Start at 60 and subtract 6. That leaves you with 54.
... when the universe grows cold. (Or someone made a typesetting mistake.)
Standard deviation is the square root of a non-negative number. It will NEVER be negative.
Answer:
The question is false
Step-by-step explanation:
I think it is 15, just by looking at it