jksnakajsja jksnakajsja

14-04-2020
Mathematics

contestada

Evaluate the sum of the following finite geometric series.
5+15+45 +135+ . . . + 1215
Sn=1

Respuesta :

mobilegamingexpert mobilegamingexpert

14-04-2020

Answer:

1820

Step-by-step explanation:

The sum of the first n terms of a geometric series with common ratio r and first term a is:

a(1-r^n)/(1-r). Plugging this in 5(1-3^6)/(1-3)=1820

Answer Link

Otras preguntas

What is the degree measure of the acute angle formed by the hands of a 12-hour clock that reads exactly 1 o’clock? A. 15° B. 30° C. 45° D. 60° E. 72°

the height above sea level of land or an object is the what

Why refer to the Articles of Confederation if they have been abolished?

In the equation x^2 + mx + n = 0, m and n are integers. The only possible value for x is –3. What is the value of m ? A. 3 B. –3 C. 6 D. –6 E. 9

If an impulse is a fraction of a second and 30 impulses equal 1/2 second, how many seconds is represented by 90 impulses?

the himalaya mountains were formed in a collision at a A. fracture zone B. transform C. convergent D. divergent

why do you think accurate measurement of time became possible much after accurate measurement of length and mass

what organelles are found only in plants cells and bacterial cells

Why refer to the Articles of Confederation if they have been abolished?

How Abraham Lincoln honesty affect the outcome of the war?