kenzieeckmeo
kenzieeckmeo
26-03-2017
Mathematics
contestada
Evaluate 7 sigma n=1 2(-2)^n-1
Respuesta :
pbjgurl123
pbjgurl123
26-03-2017
\[\sum_{n=1}^{7} 2(-2)^{n-1}\]
Answer Link
irspow
irspow
26-03-2017
Okay I think you mean the sum of the first 7 terms of the geometric sequence:
a(n)=2(-2)^(n-1)
The sum of any geometric sequence is:
s(n)=a(1-r^n)/(1-r) in this case:
s(7)=2(1--2^7)/(1-7)
s(7)=-43
Answer Link
VER TODAS LAS RESPUESTAS ( 21+ )
Otras preguntas
IN A TEST PLEASE ANSWER!! The interactionist perspective looks at how the interaction between individuals influence deviance. Please select the best answer from
How might climate change impact this ocean conveyor belt?
a type of mutation that has no observable effect is known as
1.6y + y - 4/15 y + 1 1/6y = 2 1/3
Pls whoever answer this ASAP, I'LLMARK YOU BRAINLIEST... PROMISEEnter the following transactions of Femmy in the sales day book for the month of August 2010, A
How does the industrial Revolution affect the northern economy
why does Gretel dislike her father brother and the lawyer
Rosa y Ana son las únicas primas que tengo. Ellas son — únicas primas. A. tus B. mis C. nuestras D. mi
Which accurately describe the theology of the Catholic Church during the Middle Ages? Select all that apply. Kosher dietary laws determined what foods Catholics
The average monthly temperatures for January, April, July, and October in Baltimore, Maryland are graphed below. These averages were calculated from 30 years of
