Answer:
64=4(a-44)
Step-by-step explanation:
64=4(a-44)
64=4a-176
64+176=4a
240=4a
4a=240
a=240/4
a=60 years old
 
        
             
        
        
        
Answer:
Option 2
Step-by-step explanation:
6(a)-6(3)=6a-6×3=6(a-3)
 
        
                    
             
        
        
        
Let us determine the product of 438 and 17 by partial products.
Consider 
and 
So, 

= 
= 7446
Therefore, the product of 438 and 17 is 7446.
No, Sandra's answer is not correct. 
Because she should have expressed 17 as (10+7), then if she multiplied (438 by 10) and (438 by 7). And, then added the results.Then her answer would be correct.
 
        
             
        
        
        
D = r• t 
reverses the equation so that D and r are on the same side
d/r = t

Sam travels 4 hours at a rate of 50 mph
 
        
        
        
Answer:
25 
Step-by-step explanation: