Answer:
B
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Our equations are 

Let us understand the term Discriminant of a quadratic equation and its properties 
Discriminant is denoted by  D and its formula is 

Where 
a= the coefficient of the 
b= the coefficient of 
c = constant term
Properties of D: If D 
i) D=0 , One real root
ii) D>0 , Two real roots
iii) D<0 , no real root
Hence in the given quadratic equations , we will find the values of D Discriminant  and evaluate our answer accordingly .
Let us start with 

Hence we have two real roots for this equation.


Hence we do not have any real root for this quadratic 

Hence D>0 and thus we have two real roots for this equation.

Hence we have one real root to this quadratic equation.
 
        
             
        
        
        
Answer:
50%
Step-by-step explanation:
3450 - 2300 = 1150
1150/ 2300 × 100 = 50
 
        
             
        
        
        
Answer:
Ratio 320:480
Step-by-step explanation:
please let me know if i got it right if not i'm really sorry :(