crispablo10
crispablo10 crispablo10
  • 26-02-2021
  • Mathematics
contestada

What is the sum of the geometric sequence -3, 18, -108, ... if there are 8 terms

Respuesta :

irspow
irspow irspow
  • 27-02-2021

Answer:

Step-by-step explanation:

common ratio=18/-3=-108/18=-6, a=-3

sn=a(r^n-1)(r-1)

sn=-3((-6)^n-1)(-6-1)

sn=-3(-6)^8-1)/(-7)

s8=-3(1679615)/(-7)

s8=719836

Answer Link

Otras preguntas

what is the height of parallelogram with base 6.75 and area of 218.7
used in a sentence bond energy
The Seven Weeks' War began soon after Prussian troops entered a. Holstein. b. Austria. c. Schleswig. d. Bulgaria.
Indicate which pattern of evolution is shown by the many species of finches on the Galapagos Islands.
how did the dutch extract raw materials from their colonies in the east indies - Google Search
5X - y over 3 =13 (2, -9), (3, -6) A. Both are solutions B. Neither is a solution C. The first is a solution, but the second is not D. The first is not a soluti
What is the area of a 15 ft circle
How does the brightness of a bulb tell you about the energy of electrons passing through it?
Which statement about the relationship between Native Americans and colonists is true? A.They signed and kept peace treaties. B. Each group admired the other
what did Christopher Columbus promise king Ferdinand and queen Isabella in exchange for funding his voyage and what did the queen and king promise him???