Answer:
I think it's the last one! In an experiment, one group is studied over a short period of time---
Answer:
...
Step-by-step explanation:
since they give us the side opposite of the given angle(Opposite) and we are trying to find for a (Adjacent/side), so we use TOA
tan(30)= 
i see u dont want it solved but ill solve it anyways
since a is on the bottom then lets switch them

x= 6.928
1 times 729=729 so
1mile=1.61kiloneter
multiply both sides by 729 to get 729 miles on left side
729 miles=1173.69 kilometer
whole
1173.6
6>5 so round up
1174
answer is 1174 kilometer
1 3/8 is left because 12 - 10 5/8 is 1 3/8