The answer is (-21, 13) for The second endpoint.  
Let's start by calling the known endpoint L and the unknown K. We'll call the midpoint M. In order to find this, we must first note that to find a midpoint we need to take the average of the endpoints. To do this we add them together and then divide by 2. So, using that, we can write a formula and solve for each part of the k coordinates. We'll start with just x values. 
(Kx + Lx)/2 = Mx
(Kx + 1)/2 = -10
Kx + 1 = -20
Kx = -21
And now we do the same thing for y values
(Ky + Ly)/2 = My
(Ky + 7)/2 = 10
Ky + 7 = 20
Ky = 13
This gives us the final point of (-21, 13)
 
        
             
        
        
        
Answer:
The inequality for this is 12.5x + 55 ≥ 160
and the amount of visits they need for free movie tickets is 8 visits
Step-by-step explanation:
if you subtract both sides by 55, you'll get 
12.5x ≥ 105
and if you divide both sides by 12.5, you'll get 8.4, or 8
 
        
             
        
        
        
The answer is D because you can multiply the second equation by -4
        
                    
             
        
        
        
Assuming you are referring to simple interest not compound that that it is annual you would gain $100 putting you at $600
        
                    
             
        
        
        
56 is the answer 56 5 letter combinations