Answer:
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Step-by-step explanation:
 
        
                    
             
        
        
        
A) -4
d) -3.1
 for these questions you have to subtract the two numbers since they have different signs and the biggest sign is the ending sign
        
                    
             
        
        
        
1 minute 8.25 seconds per mile
        
                    
             
        
        
        
He has done 70 push ups because by the 15th he has done 35 push ups add 15 more days and u get 70 .
        
                    
             
        
        
        
Answer:
13r²(2rs + 4r³ - 3s⁴)
Step-by-step explanation:
In equation 26r³s + 52r⁵ - 39r²s⁴;
The GCF of 26, 52, and 39 = 13
The GCF of r³, r⁵ and r² = r²
The GCF of s, (no "s"), and s⁴ = no "s" (Since one of the number doesn't have "s")
Now we can factor out 13r² from all three expressions;
26r³s + 52r⁵ - 39r²s⁴
=> <em>13r²(2rs) + 13r²(4r³) - 13r²(3s⁴)</em>
To factor it all together;
<u>13r²(2rs + 4r³ - 3s⁴)</u>
Hope this helps!