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

How would you adapt the novel into a movie script?
The migration of university students trained in western-style professions who are enticed by high wages and opportunities is often referred to as:
help me out plz I need an answer
A 154-lb person burns 420 calories per hour riding an exercise bicycle at a rate of 15 mi/hr. Write a function rule to represent the total calories burned over
As Mary stood outside, it started to precipitate. The precipitation felt like small rocks hitting her! Most likely, it was _____. rain snow drizzle hail
PLS HELP ME ASAP GUYS FOR 10 and 11 (SHOW WORK!) + LOTS OF POINTS!
Essential fat makes up _____% of total body weight in men and _____% of total body weight in women.
help me out plz I need an answer
Who created the piece which sold for the highest price back in the 20th century
solve for x x2+4x-21=0