Answer:
s= 1.401
Subtract 5.313 from 3.912 :D
 
        
             
        
        
        
Answer:
   -1.9
Step-by-step explanation:
The opposite of the opposite is the original number, -1.9. 
It is located at -1.9 on the number line.
 
        
             
        
        
        
Answer:
B, E, G
Step-by-step explanation:
 
        
             
        
        
        
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
PEMDAS = Please Excuse My Dear Aunt Sally
        
                    
             
        
        
        
15·x²=15·x so 
x²=x 
x·x=x  with x≠0 than x must be 1 
x=1