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Identify the 12th term of a geometric sequence where a1 = 8 and a6 = –8,192.
 one year ago
 one year ago
Identify the 12th term of a geometric sequence where a1 = 8 and a6 = –8,192.
 one year ago
 one year ago

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guykubpomBest ResponseYou've already chosen the best response.1
a6 = a1*r^5 8192 = 8*r^5 r^5 = 1024 r = 2 so a12 = a1*r^11 = 8*(2)^11 = 16384 i guess
 one year ago

StephanizerBest ResponseYou've already chosen the best response.0
ahhhh, that not in my choice of answerss:(
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
ahh I see now I got dizzy again lol it's too late here r = 4
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
so a12 = 8*(4)^11 sorry for many mistakes lol
 one year ago

StephanizerBest ResponseYou've already chosen the best response.0
ahh, thats not good!:(
 one year ago

StephanizerBest ResponseYou've already chosen the best response.0
but be sorry you have no idea how helpful you are(:
 one year ago

StephanizerBest ResponseYou've already chosen the best response.0
what about Identify the 17th term of a geometric sequence where a1 = 16 and a5 = 150.06. Round the common ratio and 17th term to the nearest hundredth.
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
a5 = a1*r^4 150.6 = 16*r^4 so u can figure r by using calculator 17th term to the nearest hundredth?? I don't understand my eng is not good enough lol
 one year ago

StephanizerBest ResponseYou've already chosen the best response.0
haha ummm dont worry about that part? so like Identify the 17th term of a geometric sequence where a1 = 16 and a5 = 150.06. Round the common ratio and 17th term
 one year ago

campbell_stBest ResponseYou've already chosen the best response.1
stephanizer you need to evaluate the answer for your 1st term \[T _{12} = 8\times(4)^{11}\] as the maths is correct.
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
ok r^4 is approximately 6.4 so a17 = a1*r^16 = a1*((r^4))^4 = 8*(6.4)^4=.....
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
but I want to understand eng too lol
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
no no r is approximately 9.4 lol
 one year ago

campbell_stBest ResponseYou've already chosen the best response.1
I got \[150.6 = 16r^4\] r = 1.75 then \[T _{17} = 16 \times(1.75)^{16} =123802\]
 one year ago

guykubpomBest ResponseYou've already chosen the best response.1
^^ how you figure r out ?? did you use calculator??
 one year ago

campbell_stBest ResponseYou've already chosen the best response.1
\[r^4 = \frac{150.6}{16}\] then \[r = \sqrt[4]{9.4125} = 1.7499\]
 one year ago
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