Answer:
x = - 
Step-by-step explanation:
the equation of a circle centred at the origin is
x² + y² = r² ( r is the radius )
The radius of a unit circle is r = 1
substitute (x, -  ) into the equation and solve for x
 ) into the equation and solve for x
x² + (-  )² = 1²
 )² = 1²
x² +  = 1 ( subtract
 = 1 ( subtract  from both sides )
 from both sides )
x² = 1 -  =
 =  ( take square root of both sides )
 ( take square root of both sides )
x = ±  = ±
 = ± 
since the point is in the 3rd quadrant then x < 0
x = - 
 
        
             
        
        
        
Answer:
The number is 1. 
Step-by-step explanation:
If you simplify the equation, it goes to 4x+5=3x+6. Subtract 5 from both sides and you get 4x= 3x+1. The only number that satisfies that equation is 1. 
 
        
                    
             
        
        
        
Good question I’m not sure what it is but I’m sure you can look on google
        
             
        
        
        
I’m pretty sure it’s 3 and a 2