Answer:
12% chance of winning because it's out of 100 tickets
Step-by-step explanation:
It's already reduced it remains as 69/80 because the is no greater common factor between the two.
There are 23 nickles in her purse
The first step can be subtracting 2x from both sides leaving the equation with 6x + 3 = -15
Answer:
a) cluster sampling
Step-by-step explanation:
In cluster sampling method, each member of a population is assigned to one and only one group.This means clusters are formed through probability method usually a simple random sampling.The participants in the clusters are the only one to be surveyed.
In this example, simple random sampling is used to identify 12 home rooms(cluster) where a group of 20 students (participants) in each room is given the survey.