Answer:
The sampling method used is a stratified sampling method
Step-by-step explanation:
sampling is the selection of a predetermined representative subpopulation from a larger population, to estimate the characteristics of the whole population.
Stratified sampling: Here, the total population are divided into subcategories (strata) before sampling is done. The strata are formed based on some common characteristics. In our example, the times of the day (morning, afternoon and evening) has widely varying atmospheric conditions which will add biases to the measurement of air quality. For example, the air in the morning if compared to the afternoon in an industrial area may be purer because of minimal industrial activity, hence effective comparison will be made by stratification.
Answer:
B (1,1) & (2,-1)
Step-by-step explanation:
This is the answer because if a line was drawn through these 2 points the slope would be the same as line QR so therefore the two would be parallel.
Hope this helps :)
Answer:
Marcy paid $4.15
Step-by-step explanation:
Given
Represent hotdogs with x and chips with y.
So, we have:
<u>Jamal</u>
<u>Kenny</u>
<em>See attachment for complete question</em>
Required
Determine the amount for 2x and 3y
From Jamal's and Kenny's orders we have:
--- (1)
--- (2)
Multiply (1) by 3
![3 * [3x + 2y = 4.85]](https://tex.z-dn.net/?f=3%20%2A%20%5B3x%20%2B%202y%20%3D%204.85%5D)
--- (3)
Subtract (2) and (3)
Solve for x
Substitute in
Solve for y
So, the cost of 2x and 3y is:
Answer:
V = 419.459168
Step-by-step explanation:
hope this helps
