The top one. they can't be expressed in a fraction or decimal
Answer:

Step-by-step explanation:
-For a known standard deviation, the sample size for a desired margin of error is calculated using the formula:

Where:
is the standard deviation
is the desired margin of error.
We substitute our given values to calculate the sample size:

Hence, the smallest desired sample size is 23
Answer:
True
Step-by-step explanation:
Both sides (right side and left side) of the equation are indeed equal.
I hope this helps!
Answer:
6765201
Step-by-step explanation:
(5.1*10)^4
51^4
6765201 (USED CALCULATOR)
2-2=0
5-3=2
so the answer is o over 2 aka 0/2