Answer:
x = ± √ 67 − 8
Step-by-step explanation
I think this is the answer.
 
        
                    
             
        
        
        
Answer:
The equation of the line is y = 4/3x - 8
Step-by-step explanation:
In order to find this, we first have to find the slope of the original line. We do this by solving for y. 
3x + 4y = 20
4y = -3x + 20
y = -3/4x + 5
Now that we have the slope of -3/4 we can find the perpendicular slope. The perpendicular slope of any time is the opposite and reciprocal slope. So we flip -3/4 to get -4/3 and then we make it positive (4/3). Now that we have our new slope, we can input it along with the point into point-slope form to find the equation. 
y - y1 = m(x - x1)
y - 0 = 4/3(x - 6)
y = 4/3x - 8
 
        
             
        
        
        
Answer:
about 1 and a half minutes
Step-by-step explanation:
6/5
laps over minutes
 
        
             
        
        
        
Answer:
-4x=4
Step-by-step explanation:
-4x+7=11 subtract 7 add to the 11 answer-4x=4
 
        
                    
             
        
        
        
48 gallons... since the first shower head gives 9 gallons per minute you multiply 9 by 8 then you use the equation and multiply 3 by 8 then you subtract the two shower heads