ladyraven ladyraven

19-06-2018
Mathematics

contestada

What is the sum of the first five terms of the geometric series 1 − 3 + 9 −...

Respuesta :

jdoe0001 jdoe0001

19-06-2018

[tex]\bf 1~~,~~\stackrel{-3\cdot 1}{-3}~~,~~\stackrel{-3\cdot -3}{9}~~,~~\stackrel{-3\cdot 9}{-27}~~,~~\stackrel{-3\cdot -27}{81}[/tex]

notice, the "common ratio" is -3, thus their sum is just

1 + (-3) + 9 + (-27) + 81.

Answer Link

Otras preguntas

¿Cuánto tiempo hace que estudiaste el inglés?

The angles below form a linear pair. What is the measure of angle ABC

Where did most of the comets in the Kuiper belt come from? A. They came from the Oort cloud B. They are the remains of a planet after it exploded C. They are th

what does gdp not measure

Why did apartheid in South Africa end during the 1990s? A) White leaders realized that the policy was hurting the country's economy and international reputation

The ________ glands interest psychologists because they intensify most emotions and are central to the experience of fear and anxiety.

the soccer teams has 72 bagels with cream cheese for $2 each during at bake sale the coach wants to use the bake sale money to buy socks for the 14 players at $

Describe one way to use a line plot

1. A charity fundraiser celebrity baseball game will cost $13,000 to run. If the weather is clear, they will sell 500 tickets at $40 each. But if it rains (.3

Your best friend jessica recently participated in a psychological study. when you ask her how it went, she says, "it was easy. i was just asked what i thought a