Answer:
Yes, 4 squared is a rational number.
Step-by-step explanation:
4 squared = 4 x 4 = 16
That would be the commutative property

.
Simplifying the radical, we have <u />

, so our answer is

.
Answer:
Step-by-step explanation:
the nearest 10 thousandth position is 7. So rounded to the nearest 10000 would by 70000.
Why?
Because the 1 is less than 5 and that does does not alter the 7 in any way.