hollybrownn4 hollybrownn4
  • 01-07-2020
  • Mathematics
contestada

For the following geometric sequence find the explicit formula: {-1, 3, -9,...}

Respuesta :

notfamous159
notfamous159 notfamous159
  • 01-07-2020
multiplies by -3 every time
Answer Link
jimrgrant1 jimrgrant1
  • 01-07-2020

Answer:

[tex]a_{n}[/tex] = - 1 [tex](-3)^{n-1}[/tex]

Step-by-step explanation:

The explicit formula for a geometric sequence is

[tex]a_{n}[/tex] = a [tex](r)^{n-1}[/tex]

where a is the first term and r the common ratio

Here a = - 1 and r = 3 ÷ - 1 = - 3 , thus explicit formula is

[tex]a_{n}[/tex] = - 1 [tex](-3)^{n-1}[/tex]

Answer Link

Otras preguntas

do you guys what's 5y/3=20
If every positive number has two square roots and you can find the length of the side if a square window by finding a square root of the area, why is there only
0.632 in two other forms?
using exactly four 4s and any operations write an expression to equal the number 3
do you guys what's 5y/3=20
why is the use of the inquiry process a practical way to approach science HELP
What is the rounding or compatible numbers to estimate the sum of 87+34
Can someone help me ?????
what is 24 ten thousands
7.20 7.2 greater equal or less