SOLUTION: 20.Please help with this problem https://answers.yahoo.com/question/index?qid=20210419170758AA02SxU

Question 1179160: 20.Please help with this problem
https://answers.yahoo.com/question/index?qid=20210419170758AA02SxU
Found 2 solutions by MathLover1, mananth:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

If the information given below represents a geometric sequence , find . ?

formula for nth term of a geometric sequence:

use given to find common ratio

then

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Geometric sequence formula
an = a1*r^(n-1)
a1=3645, a6 =15
a1/a6 = 3645/15 = 243
a6= 3645*r^5
3645 = a1
3645*r^5 = a6
divide a1/a6
1/r^5= 243
1/r = 3
r=1/3
a3 = 3645 *(1/3)^2
a3= 3645/9 =405
a2 =1215
a3=405
a4=135
a5=45
a6=15

RELATED QUESTIONS
13. Please help with this math problem... (answered by MathLover1)
14. Please help me with this problem... (answered by MathLover1)
15. Please help me with this problem... (answered by MathLover1)
60.please help with this answer... (answered by josgarithmetic)
https://answers.yahoo.com/question/index?qid=20200926145221AAzljKF (answered by ikleyn)
https://answers.yahoo.com/question/index?qid=20201018140421AAedVNb (answered by ikleyn,Theo)
https://answers.yahoo.com/question/index?qid=20201019184556AArzAim (answered by math_helper)
14.... (answered by ikleyn,josgarithmetic)
5.... (answered by CubeyThePenguin)