Answer:
Stratified Sampling
Step-by-step explanation:
Stratified sampling involves dividing the population into subpopulations that may differ in important ways. It allows you draw more precise conclusions by ensuring that every subgroup is properly represented in the sample.
To use this sampling method, you divide the population into subgroups (called strata) based on the relevant characteristic (e.g. gender, age range, income bracket, job role).
Based on the overall proportions of the population, you calculate how many people should be sampled from each subgroup. Then you use random or systematic sampling to select a sample from each subgroup.
I hope this helped!
<h2>
Answer:</h2>
<u>The expression is</u><u> 5(40+80)</u>
<h2>
Step-by-step explanation:</h2>
The sum of 40 and 80 can be written as
(40+80)
and when we take the 5 times of the sum
we can write as
5(40+80)
The markdown price
= the percent × regular price
the sale price
= regular price - markdown price
= regular price - the percent × regular price
= regular price×(1 - the percent)
The statements about the hyperbola are true are:
- The center is located at (0, 0).
- There is a vertex at (–6, 0).
- The directrices are vertical lines.
<h3>What is a hyperbola?</h3>
It should be noted that a hyperbola simply means a open curve that has two branches.
Here, the center is located at (0, 0), there is a vertex at (–6, 0), and the directrices are vertical lines.
Learn more about hyperbola on:
brainly.com/question/3351710
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The surface area is A = 297.33
