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Mathematics 12 Online
OpenStudy (anonymous):

please help me:(

OpenStudy (anonymous):

What is the 20th term of the geometric sequence that starts with .02 and has a ratio of 2?

OpenStudy (anonymous):

with?

OpenStudy (anonymous):

What is the 20th term of the geometric sequence that starts with .02 and has a ratio of 2?

OpenStudy (anonymous):

i have no idea i got distracted by your beauty

OpenStudy (anonymous):

lol! u can barley see my face in the picture! how do u know

OpenStudy (mathstudent55):

\(a_n = a_1 \cdot r^{n - 1} \)

OpenStudy (anonymous):

thanx mathstudent55

OpenStudy (mathstudent55):

\(a_1 = 0.02\) \(r = 2\) \(a_2 = 0.02 \cdot 2^{2 - 1} = 0.02 \cdot 2 = 0.04\) \(a_3 = 0.02 \cdot 2^{3 - 1} = 0.02 \cdot 2^2 = 0.02 \cdot 4 = 0.08\) etc. \(a_{20} = \) ?

OpenStudy (mathstudent55):

You're welcome.

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