Answer:
   m∠DBF = 92°
Step-by-step explanation:
The given statements tell you that points E and F are midpoints of their respective sides of the triangle. Hence EF is parallel to AB and ...
   ΔABC ~ ΔEFC
That means ∠DBF ≅ ∠EFC and their measures are 92°.
 
        
             
        
        
        
Step-by-step explanation:
- 3x+5y=7b equation 1
- 2x+4y=1
 2x=-4y+1
-  x=(-4y+1)/2 
- x=(-4y+1)/2 in equation 1
 3×(-4y+1)/2+5y=7b
 (-12y+3)/2+5y=7b
 (-12y+3+10y)/2=7b
 (-12y+3)/2=7b
 -12y+3=14b
 -12y=14b-3
-  y=3-14b/12
-  y=3-14b/12 in x=(-4y+1)/2 
 x=(-4×{3-14b/12}+1)/2
 x=(-3+14b)/3+1/2
 x=14b/3×1/2
 
        
             
        
        
        
Answer:

point slope form....
y - (-7) = -1/2(x-4)
y + 7 = -x/2 + 2
2y + 14 = -x + 4
2y = -x -10
y = -1/2 x - 5
Step-by-step explanation:
 
        
             
        
        
        
7. 3/4 x 12 is 9 so subtract 9/12 from 12/12 to get 3/12
8. Their pizzas were all cut differently. Josh’s pizza was cut in half, Lisa’s was cut into 6 slices and Vicki’s was cut in 8 slices