Answer: D
Explanation:
Area of triangle = [tex]\frac{1}{2} bh[/tex]
- b = base length
- h = height
Area of ΔABC =
- [tex]\frac{1}{2} CE * AB[/tex]
- [tex]\frac{1}{2} BD * AC[/tex]
Since it's the same triangle, those two areas should equal each other:
[tex]\frac{1}{2} CE*AB=\frac{1}{2} BD*AC\\\frac{1}{2} *9*8=\frac{1}{2} *7*AC\\\frac{1}{2} *72=\frac{7}{2} AC\\36*2=7AC\\AC=\frac{72}{7} =10\frac{2}{7}[/tex]
I hope this is correct
