Answer:
50.24 units^2
Step-by-step explanation:
Area of circle formula: 
r^2
r = 4, = 3.14
3.14 * (4^2) = 3.14 * 16 = 50.24
Answer: Stratified sampling
Step-by-step explanation:
Stratified sampling is a random sampling method in which the population is divided into non-coinciding groups are called strata and a sample is picked out by some design within each stratum.
Given: A researcher wants to survey people from different age groups to analyze voting patterns.
Thus he will make different groups according to different ages to analyze voting patterns that are called stratum.
Thus, Stratified sampling best accomplish this goal.
Answer:
the answer is true
Step-by-step explanation:
the more you go negative the less it is so that's why -1 is greater than -8
You would just subtract/add like you normally would from left to right because its a subtract and add operation.
Hope that helps :)
