C. Stratified
In statistics, stratified sampling is a method of sampling from a population which can be partitioned into subpopulations. In statistical surveys, when subpopulations within an overall population vary, it could be advantageous to sample each subpopulation independently.
Answer:
Number 7: Is the same triangle.
Step-by-step explanation:
Hope this helps. :D
Answer: The answer for the blank is domain.
Step-by-step explanation: Domain is the input of a function, and range is the output.