Sin60=DF/FE
Root 3/2= DF/ 18 Root 3
DF= 18*3/2
DF= 27 units
cos60=DE/FE
1/2=DE/18 Root 3
DE= 18 Root 3/2
DE= 9 Root 3 units
8,0 maby becuse your measuring the distance
Answer: 5.6
===================================
Work Shown:
cos(angle) = adjacent/hypotenuse
cos(B) = AB/BC
cos(62) = AB/12
12*cos(62) = AB
AB = 12*cos(62)
AB = 5.63365875
AB = 5.6
Answer:

Step-by-step explanation:
I had a good explanation but the equations overlapped and broke everything. Just google how to divide scientific notation, or use https://www.assignmentpoint.com/science/mathematic/dividing-scientific-notation-numbers.html
Answer:
Jim's path is the critical path on this activity graph.
Step-by-step explanation:
Critical Path:
Critical path is the the longest path in the project task paths. It shows the least amount of time in which project can be completed. It can be find by looking at the longest path in the network diagram of the project; not in term of nodes or activities instead in term of days.
In given case:
Path 1 Bill task's total duration= 6 days
Path 2 Jim's task's total duration= 17 days
Path 3 Betty task's total duration= 7 days
Path 4 Cynthia task's total duration= 14 days
Hence the longest path i.e. critical path is of Jim's activity path !