Simplyfy the expression 2< 20 -3< 7-2< 5+4< 63

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)