NOCHILLL
NOCHILLL
20-03-2017
Mathematics
contestada
FIND X
2+6+18+.............+x=531440
Respuesta :
Аноним
Аноним
24-03-2017
a=2; R=3
sum to nth term = a(R^n-1)/(R-1)
so
531440 = 2*(3^n-1)/(3-1)
= 3^n - 1
3^n = 531441
n = 12
x = 2x3^(12-1)=2x3^11
= 354294
Answer Link
VER TODAS LAS RESPUESTAS ( 93+ )
Otras preguntas
During its first month of operations, Neptune Company (1) borrowed $200,000 from a bank, and then (2) purchased an equipment costing $80,000 by paying cash of $
What are the political, economic and social impact of World War 1?
The number that belongs in the green box
Akia is balancing the equation Na + H2O NaOH + H2. He tries to find the coefficients that will balance the equation. How could he find the correct coefficients
Sweeties, Inc., manufactures a sugar product by a continuous process, involving three production departments-Refining, Sifting, and Packing. Assume that records
The Dust Bowl caused damage in ____. a. Central Texas and the Gulf region b. West Texas and the Panhandle c. West Texas and the Mexican border area d. Southe
how do you calculate time by speed and distance?
Is the current education system efficient? discursive essay points
Jessie read 1/3 of a book in the morning, and she read some more at night. By the end of the day, she still had 1/5 of the book left to read. How much of th
The fox and cooper’s hawk would be ___________________ consumers and considered ______________ predators in this food web.
