Answer:
0.25
Step-by-step explanation:
-9/6 divided by 3/-2 = 0.25
i am sorry
<span>x 2 + 2x + 1 if you wanted is just 4x+1
</span>
Answer:
f(-3)= - (-3)+5= +3 +5 = 8
Answer:
a) Suppose that F is ordered in ascending order: 
. Then, the complement of F can be written as
which is the union of a finite number of open intervals, then 
is an open set. Thus, F is a closed subset of the real numbers.
b) Take an arbitrary element of F, let us say 
. Now, choose a real number 
such that
there are not other element of F, because is less that the minimum distance between and its neighbors.
In case that 
we only consider 
, and if 
we only consider 
.
Then, all points of F are isolated.
Step-by-step explanation:
