Answer:
Step-by-step explanation:
0=2x+4
-4 on both sides
-4=2x
divid both sides by 2
-2=x
so x=-2
then y
y=2*-2+4
2*-2=1
y=1+4
y=5
 
        
             
        
        
        
Bonjour,
Soit c le côté de l' hexagone.
On a 5.2²+(c/2)²=c²
==>c²=5.2*4/3
c²=104/15
c=√(104/15)=2,6331223544175332023251281391631...
Aire de l'hexagone= 5.2*c/2*6=41,076708728913517956271998970944
Je me suis permis de répondre en Français car l'énoncé était en Espagnol. (Thanks to Google translator)
 
        
             
        
        
        
Answer:
Standard error
Step-by-step explanation:
The standard deviation of the distribution of sample means is called the standard error of the means.
It is denoted by: 
The standard error is calculated using the formula: 
where n is the sample size and  is the population standard deviation.
 is the population standard deviation.
 
        
             
        
        
        
Answer:
approx. 25.13
Step-by-step explanation:
C= 2πr
radius is half diameter
 
        
                    
             
        
        
        
Answer:
C is the answer ,got it right on EDG 2020
Step-by-step explanation: