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 ( 65+ )
ACCESS MORE
ACCESS MORE
ACCESS MORE
ACCESS MORE
Otras preguntas
Plz answer both for 10 points.!!! Thx for the help.
What is the area of this composite shape?
In two or more complete sentences, define the key features of the graph below and explain how to write its equation using function notation.
Which practice contributes the most to environmental pollution?
1. Write a numerical expression for the phrase “three groups of six subtracted from eighty.” 2. Write an algebraic expression for the phrase “the sum of a numbe
The ___ ending world war 1 was signed on November 11, 1918
Solve each equation f over 28=24
How did Hoover expect social services to be providing to poor Americans
The local water slides have 80 employees, of which 30% are temporary. How many temporary employees are there ?
What is the factorization of the trinomial below? 3x2 + 36x + 81 A. (x + 2)(x + 27) B. (x + 3)(x + 9) C. 3(x + 3)(x + 9) D. 3(x + 2)(x + 9)
