Answer: True
Step-by-step explanation:
If x2 = 49, then x = 7. True; x = 7 if and only if x^2 = 49.
I hope this solves your problem! It was a little tricky but I tried.
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9514 1404 393
Answer:
   A.  5
Step-by-step explanation:
The base AB is twice the length of the midsegment CD.
   8n +10 = 2(5n)
   8n +10 = 10n . . . . . eliminate parentheses
   10 = 2n . . . . . . . . . subtract 8n
   n = 5 . . . . . . . . . . . divide by 2
 
        
             
        
        
        
For one moth it would be....

$57.00 In total but im not sure if this is correct so if you could make sure please.
 
        
        
        
2x+3=7
2x+3-3=7-3
Whenever moving a number to the other side you have to change the sign .
2x= 4
x=2
 
 
        
             
        
        
        
Absolute value means the distance from 0.
|-0.45| =0.45
|-0.0045|=0.0045
0.45>0.0045
So 
|-0.45|>|-0.0045|