Answer:
Amount of mercury in population is in between 0.2841 , 1.1531
Step-by-step explanation:
Step by step explanation is given in the attachments 
 
        
             
        
        
        
Answer:
'∂' -- means a partial differential
'Δ' -- means a change in some variable.
'σ' --means 'sum' and 'deviation'.
The text says something about the world turning so maybe the equation has something to do with that? Maybe it is the equation for the earth's rotation. Sorry I can't find anything else, but I hope this helps a bit!
 
        
             
        
        
        
Answer:
sin b would be 4/5
Step-by-step explanation:
sine is the opposite leg/the hypotenuse
 
        
             
        
        
        
Answer:
Step-by-step explanation:
From the problem statement, we can setup the following equations:


where  is the current age of Shobos and
 is the current age of Shobos and  is the current age of his mother.
 is the current age of his mother.
Substituting the first equation into the second will allow us to solve for  :
:




Substituting this value into the first equation gives us the age of the mother:



 
        
                    
             
        
        
        
Answer:
I think it's A and D
Step-by-step explanation:
I just decided the denominator and numerator.