ljeanmaxeau ljeanmaxeau
  • 25-03-2017
  • Mathematics
contestada

if the 1st and 10th terms of geometric sequence are 4 and 100. Fine the nth term of the sequence

Respuesta :

irspow
irspow irspow
  • 25-03-2017
a(n)=ar^(n-1)  so

100=4r^9

25=r^9

ln25=9lnr

ln25/9=lnr

r=e^(ln25/9)

a(n)=4e^((n-1)(ln25/9)  if you wanted an approximation...

a(n)=4(1.43^(n-1))
Answer Link

Otras preguntas

What sort of problems do you think people in Europe face because there are so many languages? *think about trade, economy, communication, etc.*
who is anuradha koirala​
Based on The Riddle of the Rosetta Stone, what influence did many people believe Thomas Young had on the findings of Jean-François Champollion? Many people beli
Please help its7to10 it’s easy but I’m lazy
solve the quadratic equation 3x²+x-4=0
Calculate the lithium ion (Li+) concentration for a 0.821 M Li2S solution.
The length of a rectangle is 3 more than 3 times its width. The perimeter of the rectangle is 174 inches. What is the length of the rectangle?
IM 17 AND MY LIFE LOOKS BAD HERE ON OUT BECAUSE OF PERSONAL BAD CHOICES. I CANT DRIVE, IM FAILING SCHOOL, I HAVE NO HOBBIES OR SKILLS, I HAVE LOW SELF ESTEEM AN
I need the answer quickly
In the book Watership down chapters 1-4 where is the setting and how do you know this?