Answer:
Step-by-step explanation:
The formula for the length of a vector/line in your case.
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Answer:
C
Step-by-step explanation:
A geometric series will only converge if - 1 < r < 1
sum to infinity =
The nth term formula for a geometric series is
= a
where a is the first term and r the common ratio
The only summation with - 1 < r < 1 is C where r = - 0.2
Alrighty
remember some rules
and
and
for all real values of x
and
and
and
(a/b)/(c/d)=(ad)/(bc)
and
and
and don't forget pemdas
example:
but 
so
4.
5.
remember some rules
and
and
and
and
and
(a/b)/(c/d)=(ad)/(bc)
and
and
and don't forget pemdas
example:
so
4.
5.