Find the sum of the first five terms of the geometric series for which a1 = 2 and r = 2.

Question

johnweldon1993 · Answer

$$S_n = a \frac{ 1 - r^n }{ 1-r }$$

this says...the sum of the first 5 terms....is found by this equation

'a' is your first term (2)
'r' is your common ratio (2)
and 'n' is the number of terms you want to sum (5)

what do you come up with?

anonymous · Answer

thank you!

johnweldon1993 · Answer

no problem!

anonymous · Answer

by common ratio did he mean the difference of each term?

anonymous · Answer

i got my answer. common ratio is common multiplier i believe

anonymous · Answer

oh yeah its a geometric, lol i thought i read arithmetic

anonymous · Answer

:) no sweat

anonymous · Answer

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and its super fast

johnweldon1993 · Answer

Yeah sorry I left :) haha, yes as @mattishot has said....this (geometric) would be common multiplier :)

anonymous · Answer

yeah @alexisjm1. i wouldn't have gotten through my online math class without openstudy.

anonymous · Answer

yeah, only algebra II on my online site is more like calculus.

anonymous · Answer

what do you mean, online site?

anonymous · Answer

I do alg2 in flvs and geometry at school + precalc and calculus which i have started learning

anonymous · Answer

the online class i'm taking is based online lol. but it's super hard math.

anonymous · Answer

is flvs florida virtual school?