Answer:
lol good luck with that but you add them
Step-by-step explanation:
The solution is in the attached below
Circumference=31.4yd

Answer:
C.
Step-by-step explanation:
Answer:
2x+3y-z²
Step-by-step explanation:
twice a number =2x
thrice a number =3x
minus z²
HOPE THIS HELPS!!!
Answer:
its sampling distribution is centered exactly at the parameter it estimates.
Step-by-step explanation:
An unbiased estimator is an estimator that shows the correct statistic applied for the parameter of the population
Here correct represents that it should not be overestimated or underestimated. In the case when there is an underestimate or overestimate this means that there is a bias
So as per the given options the above option is correct