Kathy is deciding on her schedule for next semester. She must take each of the following classes: English 101, Music 101, Biology 102, and Math 120. If there are 15 sections of English 101, 10 sections of Music 101, 12 sections of Biology 102, and 13 sections of Math 120, how many different possible schedules are there for Kathy to choose from? Assume there are no time conflicts between the different classes.

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