Answer:
True
Step-by-step explanation:
The subsets of {b, d} are {}, {b}, {d}, {b, d}. Thus the subsets of interest to you are
... {a, e}, {a, b, e}, {a, d, e}, {a, b, d, e}
_____
We know your final sets will include {a, e}, so they're not part of the variable portion of the subsets. We know c is not included, so we can leave it out of consideration. That leaves only b and d included (or not) in the variable portion of the sets of interest. We only needed to find all the ways that we could have b or d or neither or both, that is, the subsets of {b, d}. Then we form the union of each of those subsets with {a, e}.
Well im not good at this ,butt I'll tell you something. An open dot means that point is not included , soo something like y<208 would mean 208 is not included and have an open dot, butt a closed dot means the point is included, such as <_ 450. ( The line is supposed to be under < butt i don't know how to do that.) Hope this helps
Answer:
21120 hours long
Step-by-step explanation:
42240=20 miles
42240/2=21120h