Answer:
factor left the side of the equation
(2k_9)(k+2)=0
set factors equal to 0
2k_9=0 or k+2=0
the answer is K= 9/2 or K =-2
Answer:
28
Step-by-step explanation:
Use Pemdas. Hope this helps. Pls give brainliest.
Answer:
48 hope this helped
Step-by-step explanation:
Answer: Cluster sampling
Step-by-step explanation:
Cluster sampling is a type of sampling method . With cluster sampling, the observer splits the population into separate groups which are called as called clusters. After dividing the whole populations into clusters he select a simple random sample of clusters from the population. The observer conducts his analysis on data from the sampled clusters.
From the given statement we can see that the automobile is doing his analysis by selecting three stores from each state (cluster) in the country and surveys all customers present in the store in a certain week.
Hence, he used cluster sampling .
I'm sorry for been so late.
Rational Numebers: a rational number is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. For example: 1，2，3,-1，-2，-3
Irrational Numbers: an irrational number is a real number that cannot be expressed as a ratio of integers. For example: 1/3, 1/7 , 1/9
Real Numbers: a real number is a value that represents a quantity along a continuous line. For example: all rational and irrational numbers.
Whole Numbers: A member of the set of positive integers and zero. A positive integer. An integer. For example: 142， 20， 1
