Question

Segment BDSegment BD is a perpendicular bisector of segment ACsegment AC . AD=8x−15AD=8x−15 and DC=57DC=57 .

Answer 1

AD=8x−15, DC=57

BD is a perpendicular bisector of segment ACsegment
so
AD = DC
8x - 15 = 57
8x = 57 +15
8x = 72
x =72/8
x =9

Answer 2

I hope this helps you