MathsGee Answers is Zero-Rated (You do not need data to access) on: Telkom |Dimension Data | Rain | MWEB
First time here? Checkout the FAQs!
x
Institutions: Global | Ekurhuleni Libraries | Joburg Libraries | Tshwane Libraries | Invest in Zim

MathsGee is Zero-Rated (You do not need data to access) on: Telkom |Dimension Data | Rain | MWEB

0 like 0 dislike
54 views
40 ; 8 ; 1,6 ; 0,32 ; 0,064 ; ... is a sequence.

Find the sum of the first eleven terms of the given sequence.
in Mathematics by Diamond (39,212 points) | 54 views

1 Answer

0 like 0 dislike
40 ; 8 ; 1,6 ; 0,32 ; 0,064 ; ...

r = 8/40 = 1.6/8 = 1/5 = 0.2

a = 40

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

S11 = 40(1 - 0.2^11)/(0.2 - 1)

= 50(1 - 0.2^11)

= 50(0,9 999 999 795)

S11 =  50,000
by Diamond (39,212 points)

Related questions

Welcome to MathsGee Answers, a free online study network where students can ask, answer, and explore 24/7 for improved outcomes.



MathsGee Supporting City of Joburg

Enter your email address:

MathsGee Tools

Math Worksheet Generator

Math Algebra Solver

Trigonometry Simulations

Vectors Simulations

Matrix Arithmetic Simulations

Matrix Transformations Simulations

Quadratic Equations Simulations

Probability & Statistics Simulations

PHET Simulations

Visual Statistics

Interactive Courseware

ZeroEd Search Engine

Article Rewriter Tool

Word Counter Tool

Other Tools

STEM Gender Equality | ZOOM | Slack | eBook