Answer:
210.0
Step-by-step explanation:
you are rounding to the tens place so you look at the number before it is greater than 5 so you round up getting your answer of 210.0
Positive 20 and negative 10 is a net amount of 10. 10 minutes is 1/6 of an hour. 5*1/6=5/6km
-4/3 -5/1= 120 so if you add them they equal 120 which is -120
