JannLangon706 JannLangon706

13-07-2015
Mathematics

Answered

Find S20 for the geometric series 4 + 12 + 36 + 108 + … 5,034,043,187 5,123,498,245` 6,973,568,800 7,321,089,348

Verified Answer :

tuiodasilva tuiodasilva

13-07-2015

a_{1} = 4
a_{2} = 12

a_{2} = a_{1}q
12 = 4q
q = 3

S20 = a_{1}\(\frac{(q^{20}-1)}{(q-1)}\)

S20 = 4\(\frac{(3^{20}-1)}{3-1}\)

S20 = 4\(\frac{3486784401-1}{2}\)

S20 = 2*3486784400

S20 = 6,973,568,800

Answer Link

Related Questions

Polysaccharides have sugars disaccharides have sugars monosaccharides have sugars

What is four hundred twenty times six

The goal of the Sherman Antitrust Act was to A encourage the creation of labor unions B encourage the growth of trusts C create greater fairness in industry D i

Solve 4x 6 3x 8

Lerato while taking her routine morning jog in her neighbourhood was attacked by Jabulanis fierce rottweiler dog named Butch Butch charged at Lerato unexpectedl

What measures were used by the Roman Empire to create cultural unity and strengthen the Empire

It is safe to eat baked goods that have been handled using a Deli paper b Cloth towel c Finger tips d Bare hands

Which property of an object describe how easily electricity travels through it

What is 0001 as a percent

Which of the following is Not 1 of the 4 pillars that made up Reagonomics a Tighten the money supply to reduce inflation b Reduce government regulation c Reduce

Web Analytics