Answer:
90 an right angle 
Step-by-step explanation:
 
        
             
        
        
        
The origin is at the point (0,0). Therefore, the y-intercept will be 0. For two points to be perpendicular, the slopes must be opposite reciprocals of each other. .5 can be seen as 1/2, so the reciprocal is 2, and it is positive, making that 2 negative. Your equation would be y = -2x. 
        
             
        
        
        
300.02 if you use the square root of 72
        
                    
             
        
        
        
Answer:
g + 15 = 40
or
40 - 15 = g
Step-by-step explanation: