radomes.openskiesproject.org
parker1751 parker1751
  • 15-05-2016
  • Mathematics
Answered

Find the sum of the first 8 terms of the geometric series with a1=4 and r=3

Verified Answer :

bello1998 bello1998
  • 15-05-2016

An=a1(r)^n-1
a1=4(3)^2-1
a2=4(3)^3-1
keep going till 
a8=4(3)^9-1

Answer Link

Related Questions

what did the cultures group of the far north hunt
Which one of the following is not considered to be a secondary source of authority for the tax code A RIA Research Institute of America B CCH Commerce Clearing
Evaluate 6539127824
1 Which sentence is grammatically correct a Mis hermanas trabajas mucho b Mis hermanas trabajo mucho c Mis hermanas trabajar mucho d Mis hermanas trabajan mucho
how much is 5a6b12
low tide is 1 foot below the average water level High tide is 5 feet higher than low tide Write an integer that represents the average water level relative to h
Your drawer contains 10 red socks and 11 blue socks Its too dark to see which are which but you grab two anyway What is the probability that you get one of each
What is an example of a muscle of facial expression
Which definition of lore best matches the most common definition given by the dictionary entry
Describe how DNA evidence might be used to confirm scientists conclusions about any relationship between birds and seals