PLS HELP THIS IS HARD ANYONE PLS

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

What is 0.368,0.380,0.365,and 0.383 in order from least to greatest

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?