21. A cricket, getting stalked by a hungry bearded dragon, jumps at an initial speed of 10 inches per second. The resulting quadratic model of h = -10t2 + 75t, where h is the height in inches and t is the time in seconds. In how
many seconds will the cricket land back on the ground after the first jump? Show all work and write your answer in
complete sentences with proper units labeled.

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