325 meters in 28 seconds is 11.6 meters per second hope this helps.
Step-by-step explanation:
"congruent" for lines simply means they are equally long.
15. yes. AB = EF = 3
16. yes. BD = DF = 8
17. no. AC = 5, CD = 6
18. yes. AC = DE = 5
19. no. BE = 13, CF = 14
20. no. CD = 6, DF = 8
8/20as well，since the number of green beads and yellow beads is the same，so equal probability
4/6=0.6666666667
0.6666666667×39=26 millimeters
