Can someone help me?

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok

Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?