I think it's 37.5 . I'm pretty sure cause I think you divide 3/8 . Then you go 2 to the right for your answer with the decimal. Not sure but . I think I'm right.
        
             
        
        
        
A. (0,-6)
plug in the area to the area formula for a triangle (A=1/2bh). so 28=1/2b(4) [since the height is 4]. divide by 4 (7=1/2b). multiply by 2/divide by 1/2 (14=b). the base equals 14 units long.
B. y=2/3x+4
find the slope of the line (2/3)
the y-intercept is 4
        
             
        
        
        
We know that a triangle has three sides, all the same length (its equilateral, after all)
The equation to find the length of each side is
Perimeter divided by 3
or in this case
48.6 divided by 3=16.2cm (don't forget the unit)
Hope that helps :)
        
                    
             
        
        
        
Answer:
x = 2/3
Step-by-step explanation:
cross multiply 
-9(x-4) = 10(3x+1) 
and then solve the equation
-9x + 36 = 30x + 10
36 = 39x + 10
26 = 39x 
x = 2/3