lisetter lisetter
  • 28-02-2018
  • Mathematics
contestada

Find r for the geometric series with s5 = 484, a1 = 4, a5 = 324

Respuesta :

Аноним Аноним
  • 28-02-2018
a5 / a1 =  r^4  = 324/4 

So r^4 = 81

r = +/- 3

If  r = 3 :-

S5  = 4 *  (3^5-1) / (3-1)  = 484

so r = 3 Answer
Answer Link

Otras preguntas

Intercontinental, Incorporated, uses a perpetual inventory system. Consider the following information about its inventory: July 1, purchased 10 units for $910 o
Would you rather be remembered and honored on a bill, as a school name, or a street name? Why?… just curious
What is the value of the following expression? 7 + 18 ÷ ( 6 - 3 )
you are asked by your mother to help her prepare food packs for your sister birthday when you counter the food packs there we're only 36 packs when your sister
When asking questions during criticism, it is best to be _______. a. understated b. defensive c. open minded d. annoyed
4x5 divided by 6 divided 3
(7x10^5) divide (2x10^2) Give answer in standard form
Do number 7 pleaseeee
In "Happiness is...", which context clues can help you figure out the meaning of malcontent in the first sentence of paragraph 3? !! HELP PLEASE !! - I'll give
Prompt What is the purpose of government? Select a quotation from a US leader on the subject of government