1 mile = about 1  1/3 km because 8/6  = 1 1/3
so 28 times 1 1/3 = 37 1/3  (first answer)
42 / 6 = 7 
7 miles are in 42 km (2nd answer)
        
             
        
        
        
Answer:
46 terms
Step-by-step explanation:
a₁=b, a₂₁= bₙ, d₁=9, d₂=4
n=?
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a₂₁= a₁+20d₁= a₁+20*9= a₁+180
bₙ= b₁+(n-1)d₂= a₁+4(n-1)
a₁+4(n-1)=a₁+180
4(n-1)=180
n-1= 180/4
n-1= 45
n=46
 
        
             
        
        
        
Answer:
8.  -3, 16
9.  -3, 4.5
Step-by-step explanation:
See attached worksheet.
 
        
                    
             
        
        
        
Answer:
-0.5 
Step-by-step explanation:
Use the average formula:
Sum of all numbers/Number of items
6 + (-7) / 2
= -1/2
So, the number in the middle of -7 and 6 is -0.5