Sikephusamkelo Sikephusamkelo
  • 21-05-2022
  • Mathematics
contestada

512=-4(-2)^n-1 find n in geometric sequence

Respuesta :

KimfromMissSaigon
KimfromMissSaigon KimfromMissSaigon
  • 21-05-2022

Answer:

n = 8

Step-by-step explanation:

512/-4 = -128

-2^? equals -128? Has to be odd since it's negative

-2^1 = -2

-2^3 = -8

-2^5 = -32

-2^7 = -128

But it's -2^n-1 = -128 so you have to add 1

7+1 = 8

So n=8

Answer Link
alfredlim29448 alfredlim29448
  • 21-05-2022

Answer:

n = 8

Step-by-step explanation:

Rearrange the equation to find n:

512/-4 = [tex](-2)^{n-1}[/tex]

-128 = [tex](-2)^{n-1}[/tex]

[tex](-2)^{7}[/tex] = -128

So, n-1 = 7

n = 8

Answer Link

Otras preguntas

PLEASE HELP! image below! Not History sorry lol Math
The spotted touch-me-not, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. Such an adaptation is favorable becau
can somone help me with this​
Suppose the angle of elevation from a ship to the top of a lighthouse on top of a cliff is 5º. The lighthouse is 70 ft tall and the cliff is 150 ft high. Find t
in the book being a public character what is the dogs name
the premier of the National people's Congress In china is chosen by the
Pi times 54 -78 you cant simplify
A sector fund specializing in commercial bank stocks had average daily assets of $5.2 billion during the year. Suppose the annual operating expense ratio for th
The decomposition of ammonium dichromate [(NH4)2Cr2O7] is called the volcano demonstration for its fiery display. The decomposition reaction involves breaking d
Who is our government president?