Answer:
You really just moved -6 steps or 6 steps backwards
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
3 1/2 = 7 /2
2 1/2 = 5 /2
7/2 - 5/2
= 2/2 = 1
hope it helpful
 
        
             
        
        
        
<u>Answer: </u>
Option (c) 
The average speed between 2.8 km and 4.2 km is 42 km/h
<u>Explanation:</u> 
Given, the distance between 2.8 km and 4.2 km is 4.2 - 2.8 = 1.4 km
Time (in hours) between 2.8 km and 4.2 km 
     = 0.084 – 0.051 
      = 0.033 hr
Speed =
Speed = 
Speed = 42.4 km/hr = 42 km/h (rounded to nearest)
Therefore, the average speed between 2.8 km and 4.2 km is 42 km/hr
Hence, Option (C) is correct
 
        
             
        
        
        
(n-4)(n+11) so pretty much B
        
             
        
        
        
Jeff is correct because:
2 sides of a triangle must always be longer than the other side, so:
12+8>19
19+8>12
12+19>8
Since all of them are true, Jeff is correct