Answer: -7cos(x)
Step-by-step explanation:
d/dx (f(x))= -7cos(x)
 
        
             
        
        
        
unit rate would be miles per hour
 so divide 210/3 = 70
 
 
        
                    
             
        
        
        
Answer:
a=20
Step-by-step explanation:
7+13=20
20-7=13
 
        
             
        
        
        
Answer:
if you divide it by 2, you would have 128 slices because 256 ÷ 2 gives you 128, and when you multiply 128 by 2 you get 26. 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
d= 24
Step-by-step explanation:
-2= d/3 - 10 
-6= d-30
-d=-30+6
-d= -24
d= 24