X2 − 6x = 16. 1) which is equivalent to the given quadratic equation? a) (x + 4)2 = 16 b) (x − 4)2 = 16 c) (x − 3)2 = 25 d) (x + 3)2 = 16

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?