Answer: The third option is correct.
Step-by-step explanation:
In order for two equations to be parallel, the equations' slopes must be the same.
The factors of 90 are: 2*3^2*5
or: 2,45, 3,30, 5,18, 6,15, 9,10, 1,90
in order: 1,2,3,5,6,9,10,15,18,30,45,90
Answer:
Cool
Step-by-step explanation:
Answer: A) Stratified random sampling
Step-by-step explanation:
Since , the researchers divided college students into the four classes (freshman, sophomore, junior, and senior) and then took a random sample of students from each class.
That means each category is participating in the sample.
It means , they used stratified sampling method where each class denotes a strata.
- <em>Stratified random sampling</em><em> is a kind of random sampling technique in which the researcher divides the whole population into some finite number of groups also known as strata , the he randomly pick individuals from each strata to make a sample. </em>
Here , each category participates in researcher's analysis.
Hence, the correct answer is A) Stratified random sampling .
Answer:
-1
Step-by-step explanation:
Slope formula: (y₂ - y₁) / (x₂ - x₁)
= (2 - 1) / (1 - 2)
= -1
