Question

Find S8 for the series -2 + -10 + -50 + -250 +…

Answer 1

the series is geometric... so what is the common ratio...?

Answer 2

i need help

Answer 3

so what is each term being multiplied by to get the next term.... that is called the common difference...

it found by comparing terms

\[r = \frac{a_{2}}{a_{1}} = \frac{a_{3}}{a_{2}}...\]

Answer 4

oops should be common ratio... not difference

Answer 5

If this is an infinite series, the terms get larger and larger in the negative direction, which means that the sum will not converge. If this is a sequence, then we can find the nth term.

Answer 6

i just need the answer.. please and thnk you

Answer 7

thats not helping me