parisfrance896 parisfrance896

11-03-2016
Mathematics

contestada

find the sum of the geometric series -3,15,-75,375 when there are 9 terms and select the correct answer below

Relax

Respuesta :

Аноним Аноним

11-03-2016

The sum to nterms:

Sn=a(r^n - 1) / (r-1)

r=15/-3=-5
a=-3

Sn=-3(-5⁹ - 1) / (-5-1)=-976563

Answer; -976563

Answer Link

Otras preguntas

Given that angle E C A and angle E C D are supplementary, what is the measure of angle E C D?

what are the three crops that grew well in greece's soil

The Great Compromise overcame the obstacle of state representation by establishing a unicameral Congress, with representation based on population. a unicameral

how many weeks are in 49 days

open attack usaully armed

What two oceans touch Australia?

What is 80/90 in simplest form

A life cycle in which organisms switch back and forth between diploid and haploid stages A. is a haploids life cycle B. is a diploids life cycle C. is an altern

NOT A MULTIPLE CHOICE QUESTION, I NEED AN ANSWER FOR ALL!!! I. The Bread Machine (25 points) In real life, you must often make choices about whether to buy some

write 3.48 repeating as a fraction and write 1.07 repeating as a fraction