The distributive property:
a(b + c) = ab + ac
We have
9(4m + 1) = (9)(4m) + (9)(1) = 36m + 9
<h3>Answer: A. 36m + 9</h3>
 
        
             
        
        
        
Step-by-step explanation:
x² = 50²+ 55² - 2 • 50 • 55 • cos61°
 
        
             
        
        
        
Answer:
Hi there!
The answer for number 13 is 2.
I picked two coordinates: (1,1) and (2,3)
Then I used the (y1-y)/(x1-x) equation to get 2.
The answer for number 14 is 2.
I picked two coordinates: (1,0) and (2,2)
Then I used the  (y1-y)/(x1-x) equation to get 2.