Answer:
x ≤ 19
Step-by-step explanation:
The instructions here are probably "solve for x."  Please include them.
4 - x + 6^2 ≥  21
becomes 4 - x + 36 ≥  21
Now combine like terms.  4 and 36 combine to 40:  40 - x ≥ 21, and so:
19 - x ≥ 0
Adding x to both sies results in
x ≤ 19
Please, include the instructions when you post a question.  Thanks.
 
        
             
        
        
        
Answer: false
explanation;
        
                    
             
        
        
        
Answer:
your speed is 8.1
Step-by-step explanation:
17.5-9.4=8.1
 
        
             
        
        
        
U and 2 friends....so it will be split 3 ways
1st day : 93
2nd day : 75
3rd day : 108
for a total of : 93 + 75 + 108 = 276
split 3 ways.....276/3 = $ 92 per person <==
        
             
        
        
        
Mixed numbers are a mix of a whole number and a fraction
a easy one is 
1 and 1/4+1 and 3/4
1 and 1/2 +1 and 1/2
1 and 9/10 and 1 and 1/10
etc