The answer is 8...............
        
             
        
        
        
12.42
12°+.42(60)
12°25.2'
12°25'+.2(60)
12°25'12"
        
                    
             
        
        
        
Answer:
It's the last choice: 
2x + y - 1 = 0.
Step-by-step explanation:
 x - 2y - 3 = 0
Convert to slope-intercept form in order to find the slope:
-2y = -x + 3
y = 1/2x - 3/2
So the slope  is 1/2.  The slope of a line perpendicular to this is -1 / 1/2 = -2.
Using the point-slope form to find  the required equation:
y - y1 = m(x - x1)
x = 4 and y = -7 so we have:
y + 7 = -2(x - 4)
y + 7 = -2x + 8
2x + y - 1 = 0  is the answer.
 
        
             
        
        
        
Answer:9-16=-7
Step-by-step explanation: