Answer:
The associative property
Step-by-step explanation:
:/ wait its u again lol
Answer:
Cluster sampling.
Step-by-step explanation:
Samples may be classified as:
Convenient: Sample drawn from a conveniently available pool.
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this question:
People divided into groups, by households.
Each member of the households(group) is surveyed, so cluster sampling.
The best estimate of the sum of the expression given is 
What is a Fraction ?
A fraction is written as p/q , where q 
0
It is asked to determine the sum of the fraction
31/4 + 17/3 + 8/18
Taking the LCM of 4 , 3 , 18
LCM of 4 , 3 ,18 is 36
Therefore
(279+204+16) /36
499 / 36
Therefore the best estimate of the sum of the expression given is .
To know more about Fraction
brainly.com/question/10354322
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Answer:
-220
Step-by-step explanation:
(11×4)×(4²-6×4+3) (calculate the power)
(11×4)× (16-16×4+3)
44×(16-24+3)
44×(-5)
-44×5
=-220
can you mark me as the brainliest?
