viviananaiah18 viviananaiah18
  • 23-04-2019
  • Mathematics
contestada

What is the sum of an infinite geometric series if a1 = 144 and r = 1⁄4?

A.288
B. 576
C. 252
D. 192

HELP QUICK PLEASSEE

Respuesta :

jimrgrant1 jimrgrant1
  • 23-04-2019

Answer:

D

Step-by-step explanation:

The sum to infinity of a geometric sequence is

sum to infinity = [tex]\frac{a_{1} }{1-r}[/tex]

here [tex]a_{1}[/tex] = 144 and r = [tex]\frac{1}{4}[/tex], hence

sum = [tex]\frac{144}{1-\frac{1}{4} }[/tex]

      = [tex]\frac{144}{\frac{3}{4} }[/tex]

      = [tex]\frac{144(4)}{3}[/tex] = 192 → D

Answer Link

Otras preguntas

A false statement concerning matter is:
someone please help:)
telling the patient that you will help when he or she calms down is effective or ineffective?
The function h is defined by h(x)=x+7/3x+2
NEED ANSWER ASPA.... PLS HURRY The height of the new bike tunnel, y, in feet, is given by the following equation, where x is the horizontal distance, in feet, f
Which logarithmic equation is equivalent to 3^2=9
what is the value of cos theta in the diagram below?
Which angles are supplementary? ∠LKM and ∠MKN ∠PKO and ∠PKL ∠PKO and ∠MKN ∠MKN and ∠OKN
which property do metalloids share with nonmetals
What type of damage is Ditto immune to?