Question

find the sum of the first 6 terms of the geometric sequence for which a2=.7 and a3=.49

Answer 1

what is the ratio of the sequence?

Answer 2

.7

Answer 3

apply formula of the sum, what do you get? If you don't know the formula, google and tell me what it is because I don't know either, hahahaha

Answer 4

\[sn=\frac{ a1(1-r^n) }{ 1-r}\]

Answer 5

i got 2.94

Answer 6

me too!! hihi

Answer 7

so is that it? :P