sharania3105 sharania3105

01-08-2021
Mathematics

contestada

Find the number of terms of the geometric progression 81, 27, 9,....,1/81

Respuesta :

jasongggg jasongggg

01-08-2021

Answer:

9

Step-by-step explanation:

r = 27/81 = 1/3

a = 81

Tn = 1/81

ar^(n-1) = 1/81

81(1/3)^(n-1) = 1/81

(1/3)^(n-1) = 1/6561

(1/3)^(n-1) = 1/3^(8)

Compare the exponents,

n-1 = 8

n = 9

Answer Link

Otras preguntas

Which of these is the correct time frame of the progressive era?

Whats the difference between a prokaryote and a eukaryote? (will upvote!! <333)

What is the surface area of this design?

Myths contribute to society by

Can anyone PLEASE help with java project?

Brad is testing three solutions with litmus paper. after dipping the litmus paper strips in the solutions, he observes two papers turning blue and one turning r

Write a true proportion from each set of four numbers. Is it possible to make another proportion using the same set of numbers? 4.5; 6; 9; 12

What is a “thought shot”??

Which of the following is an example of how economic motives helped spread European Imperialism?

complete the sentence with the correct Spanish phrase; would you like me to tell you_?