Hello!
I believe the answer is they can, together, paint the room in 8.9hrs.
Hope this helps! ☺♥
        
             
        
        
        
Answer:
115.3 hertz
Step-by-step explanation:
For either interval, the value of the sample mean is given by the average of the lower and upper bound of the confidence interval. Since both intervals were constructed by using the same sample, both values should be equal.
For the first interval:

For the second interval:

 
        
             
        
        
        
22     = 100%
26,40 = x%
26,4*100/22=120%
x=120%
120%-100%=20%
The answer is 20%
        
             
        
        
        
No it is 0.9x10= 9. 0.9x 100 would be 90
        
             
        
        
        
The answer is the first one hope this helps!!