briannalane120 briannalane120

23-04-2017
Mathematics

contestada

Find the exact value of the 8th term of the geometric sequence: 648,216,72,24

a) .30

b) 8
_
2481

c) 8
_
9

d) 8
___
27

Respuesta :

zebsi0n zebsi0n

23-04-2017

The sequence multiplies by 1/3.
Using the formula for a geometric sequence:
a(n) = a(1) * r^(n-1)
So...
a(n) = 648 * (1/3)^(n-1)
Plugging in 8 for n produces:
a(n) = 648 * (1/3)^(7)
Using a calculator, I find the answer to be 0.296296296...

Answer Link

Otras preguntas

Choose all that apply : Growth _____. *occurs only in multicellular organisms **only increases size of cells ***usually increases the complexity of an organism'

Choose the correct word that completes each statement about inscribing a square in a circle. The second diameter that is constructed or copied is_________ to th

517x82= what is the anser

Why is the direction of position V upwards?

25 POINTS I think it's A, am I correct

10) Which figurative language does the author use in the third sentence to emphasize the difference between the hummingbird and the heron? A) a simile B) animat

prove that sin3a-cos3a/sina+cosa=2sin2a-1

Which statement BEST describes black soldiers' participation in the Civil War? A) Black soldiers were only allowed to cook, clean and perform hard labor. B) Bl

Who coined the term, Ancien Regime? History majors in college the people of France after the revolution The Pope The King of France

40 people adopted a manatee 30th foundation this year 30% more people adopted how many more people adopted a manatee this year