What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701?

Question

mathmale · Answer

What is the general formula for the SUM of an infinite geometric series?

What is tht for the SUM of the first n terms of a geom. series?

What is the value of a, the first term of the series/

What is the value of the common factor, r?

anonymous · Answer

Anthonyym!!

anonymous · Answer

Please help

mathmale · Answer

@chris5122 :     I've given you solid guidance towards solving this problem.  It's disappointing that you haven't so much as responded, let alone done anything yourself that I know of.  Why would things be better if you involve a different helper?

anthonyym · Answer

There's a formula. The sum = $$a\frac{ 1-r^n }{ 1-r }$$, where a is the starting number, r is the rate which you multiply each term by, and n is the number of terms in the sequence. Your formula may be different but just plug the numbers according to what they are and solve.

anonymous · Answer

Math male im sorry

anonymous · Answer

I just received your response

mathmale · Answer

Thank you

anthonyym · Answer

Also refer to that other similar question you asked which I answered, "What is the sum of the first eight terms of the geometric series where a1 = 2 and r = −5?"

mathmale · Answer

Nice work, anthony.    Please help Chris just enough so that he can solve this problem by himself in the end.  Learn more that way.

anonymous · Answer

Thank you guys i got it

mathmale · Answer

Glad you "got it."  Please show your work next time.

Thanks again, Anthony.