Answer:
Stratified Sampling
Step-by-step explanation:
Since Keri divides the day into different strata and each unit is selected from each strata randomly. So, it is Stratified Sampling.
Further, In Stratified Sampling population is divided into several groups such that within the group it is homogeneous and between the group it is heterogeneous. And now a selection of each stratum and unit has an equal chance of selection.
3bc is the answer to your problem
Answer:
the answer is -2x^9
Step-by-step explanation:
i know this because of photomath lolll
add up the X values and y values and divide by two
X=(-2+6)/2=2
Y=(-4=8)/2=2
