Answer:
x = - 3 ± 3
Step-by-step explanation:
given the equation x² + 6x - 9 = 0
We can solve for x using the quadratic formula
x = ( - b ±  ) / 2a
 ) / 2a
with a = 1, b = 6 and c = - 9
x = ( - 6 ±  ) / 2
 ) / 2
   = ( - 6 ±  ) / 2
 ) / 2
   = ( - 6 ±  ) / 2
 ) / 2
   = ( - 6 ± 6 ) / 2
 ) / 2
x = - 3 ± 3
 
        
             
        
        
        
If you divide on a calculator, you get 4.468208092, so I would say the answer is 4.4, since the number after 4 is 6, which is more than 5, I round to the 4. Hope this helps! 
Aye Sir!
        
             
        
        
        
Answer:
see explanation
Step-by-step explanation:
If f(x) and g(x) are the inverses of each other, then
f(g(x)) = g(f(x)) = x
f(g(x)) = f(x -  ) = x -
) = x -  +
 +  = x
 = x
g(f(x)) = g(x +  ) = x +
) = x +  -
 -  = x
 = x
Hence f(x) and g(x) are the inverse of each other
 
        
             
        
        
        
just plug into a calculator
 
        
             
        
        
        
Answer:
Step-by-step explanation:
to find x we can use tangent function
tan 31= x/9
0.60=x/9
x=0.60*9=5.4 choice B