Answer:
x = 10
Step-by-step explanation:
x = 4 + (4x-4) ^ (1/2)
 First, we rewrite the expression:
 x = 4 + (4x-4) ^ (1/2)
 x = 2 (2+ (x-1) ^ (1/2))
 x = 4 + 2 (x-1) ^ (1/2)
 From here we get a solution for x = 10
 To check it we substitute x = 10 in the expression:
 10 = 4 + 2 (10-1) ^ (1/2)
 10 = 4 + 2 (9) ^ (1/2)
 10 = 4 + 2 (3)
 10 = 4 + 6
 10 = 10
 Answer:
 The solution is:
 x = 10
 
        
                    
             
        
        
        
Answer:
D and C
Step-by-step explanation:
Took the quiz
 
        
                    
             
        
        
        
Answer:
1/2 glass milk is left.
Step-by-step explanation:
2/3 - 1/6 = 1/2
 
        
             
        
        
        
Answer:
The answer is B. Between 4.5 and 6 hours since he started playing
Step-by-step explanation:
 
        
             
        
        
        
9514 1404 393
Answer:
   1 < 15 -2a < 7
Step-by-step explanation:
There are a couple of ways you can do this.
1) Put the minimum and maximum values of a into the expression to see what its corresponding values are:
   15-2a for a=4:
      15-2(4) = 7
   15-2a for a=7:
      15-2(7) = 1
Then ...
   1 < 15-2a < 7
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2) Solve for a in terms of the value of 15-2a, then impose the limits on a.
   x = 15 -2a
   2a = 15 -x
   a = (15 -x)/2
Now, impose the given limits:
   4 < (15 -x)/2 < 7
   8 < 15 -x < 14 . . . multiply by 2
   -7 < -x < -1 . . . . . . subtract 15
   7 > x > 1 . . . . . . . . multiply by -1
   1 < 15-2a < 7 . . . . . use x=15-2a
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The vertical extent of the attached graph is the range of possible values of 15-2a. It goes from 1 to 7.