Answer:
<h3>The option D) All of the above is correct</h3><h3>The major disadvantage of crude rates is that:</h3>
- They may not allow for comparison of populations that differ
- They do not permit comparisons of populations that vary in age distribution.
- They are difficult to calculate from available data sources.
Hence options A ,B and C are correct
Step-by-step explanation:
Given that crude rate
To find the disadvantage of crude rate :
A crude rate is the number of new cases (or deaths) occurring in a specified
, it can be expressed as the number of cases per 100,000 population at risk.
<h3>The major disadvantage of crude rates is that:</h3>
- They may not allow for comparison of populations that differ
- They do not permit comparisons of populations that vary in age distribution.
- They are difficult to calculate from available data sources.
Hence options A ,B and C are correct
<h3>∴ The option D) All of the above is correct.</h3>
Answer:
Correct graph is C
Step-by-step explanation:
Given two inequalities are:
1. 
2. 
Step1 : Remove the inequalities
1. 
2. 
Step2 : Finding intersection points of equations
By solving linear equation



Replacing value of x in any equations
we get,



Therefore, Point of intersection is (-0.5,2.5)
Step3: Test of origin (0,0)
Here, If inequalities holds true for origin then, shades the graph towards the origin.
For equation 1.



True, Shade graph towards origin.
For equation 2.



True, Shade graph towards origin.
Thus, Correct graph is C
Answer: True, hope this helped.
Step-by-step explanation: