Answer:
can you please describe this more and what it is then i will answer it in the comments
Step-by-step explanation:
13. 80 + 60 - 140. 180 - 140 = 40 degrees.
14. 90 + 160 + 85 = 275. 360 - 275 = 85 degrees.
16. 105 + 60 + 120 + 115 = 400. 450 - 400 = 50 degrees.
17. 180 - 110 -70 / 2 = 35. 180 - 35 = 145 degrees.
Hope this helps.
Answer:
50 km/h
Speed = distance/ time. 30 min= 0.5 hour.