400000 10 to the fifth power is 100000, so when you switch out the 1 for a 4, it become 400000.
        
             
        
        
        
Answer:
27 miles in the morning and 85 miles in the afternoon.
Explanation:
Let m be the number of miles they rode in the morning.  They rode 4 more than 3 times this many in the afternoon; this gives us the expression
3m+4 
to represent the miles ridden in the afternoon.
Together they rode 112 miles; this means we add the morning miles, m, to the afternoon miles, 3m+4, and get 112:
m+3m+4 = 112
Combine like terms:
4m+4 = 112
Subtract 4 from each side:
4m+4-4= 112-4
4m = 108
Divide both sides by 4:
4m/4 = 108/4
m = 27
They rode 27 miles in the morning.
That means in the afternoon, they rode
3m+4 = 3(27)+4 = 81+4 = 85 miles.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Sum of all angles of triangle = 180
39 + 102 + x = 180
          141 + x = 180
Subtract 141 from both sides
                  x = 180 - 141
                  x = 39
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Since these are like-terms, they can be added together. 
7z + 7z = 14z
 
        
             
        
        
        
1,35     3,57
  
slope = (57 - 35)/(3 - 1) = 11
  
y = 11 x + b
  
35 = 11 (1) + b
b= 24
  
y = 11x + 24
  
y = 11(5) + 24 = 79