X would equal 70°.
For every triangle, all interior angles add up to 180°. This means that we can add together 42 and 68 to get 110°. Because the sum of all interior angles in a triangle must be 180°, we subtract 110 from 180 to see how much more we need, which gets us 70°.
I hope this helps!
        
                    
             
        
        
        
Answer:
2/3
Step-by-step explanation:
0.6 repeating as a fraction is 2/3
 
        
                    
             
        
        
        
Answer:
y =-5x + 7
Step-by-step explanation:
y = -5x + 4
Slope = -5
Parallel lines have same slope
Slope of the parallel line to this line = -5
(1 , 2)
y -y1 =m(x - x1)
y - 2 = -5(x - 1)
y -2 = -5x + 5
    y = -5x + 5 + 2
   y = -5x + 7
 
        
             
        
        
        
Answer:
(x, y - 6)
Step-by-step explanation:
 
        
             
        
        
        
The 

 confidence interval of a standard deviation is given by:

Given a sample size of 31 charge sales, the degree of freedom is 30 and for 90% confidence interval, 

Therefore, the 90% confidence interval for the standard deviation is given by
