1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
denis23 [38]
3 years ago
12

Find the sum of the geometric sequence. 1, one divided by two, one divided by four, one divided by eight, one divided by sixteen

Mathematics
2 answers:
krek1111 [17]3 years ago
8 0

The equation for a finite geometric sequence is Sn=a1((1-r^n)/(1-r))

a1=1

r=.5/1=.5

n=5

Using the equation:

Sn=a1((1-r^n)/(1-r))=1((1-.5^5)/(1-.5))=1((1-.03125)/(1-.5))=1(.96875/.5)=1*1.9375=1.9375

Answer Choices:

A. 1/12 or .083

B. 93

C. -1/48 or -.02083

D. 31/16 or 1.9375

The Answer is D. 31/16

igomit [66]3 years ago
5 0
a_1=1;\ a_2=\dfrac{1}{2};\ a_3=\dfrac{1}{4};\ a_4=\dfrac{1}{8};\ a_5=\dfrac{1}{16};\ ...\\\\d=a_2:a_1\\\\d=\dfrac{1}{2}:1=\dfrac{1}{2}\\\\|d| \ \textless \  1\ therefore\ the\ sum\ S\ of\ the\ geometric\ sequence\ is\ equal:\\\\S=\dfrac{a_1}{1-q}\\\\subtitute\\\\S=\dfrac{1}{1-\frac{1}{2}}=\dfrac{1}{\frac{1}{2}}=1\cdot\dfrac{2}{1}=2\\\\\\Answer:\boxed{S=2}
You might be interested in
Two samples of fish from a pond were analyzed. The second sample was taken six months after the first sample.
Agata [3.3K]

Answer:

B.

D.

E.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What is (x-2)(x+2) in standard from
trasher [3.6K]
Answer= x^2-4

I hope this helps.
5 0
2 years ago
7. what is the volume of this object
OverLord2011 [107]

Answer:

Dont knowwwww

Step-by-step explanation:

5 0
3 years ago
Help please need by tomorrow
kirza4 [7]
Well number one is an acute angle number two is obtuse and number three is obtuse
3 0
3 years ago
Please help ....!!!!!
Alinara [238K]

Answer:

4

Step-by-step explanation:

44444444444444444

7 0
3 years ago
Other questions:
  • Use the digits 2,3,and 5 to create a fraction and a whole number with a product greater than 2
    5·1 answer
  • Adrienne answered all 21 multiple choice questions correctly. If her teacher decided to let one of the questions count as bonus,
    5·1 answer
  • What are true of the function f(x)=49(1/7)x? Check all that apply
    5·2 answers
  • What is 43.09 to the nearest whole number​
    6·1 answer
  • The bases of a trapezoid are 16.8 yards and 6.9 yards. what is the average of the two bases?
    15·2 answers
  • The cost for a company to produce x t-shirts can be modeled by C(x)=21x-98 and the revenue for selling these shirts can be model
    14·2 answers
  • How many solutions does 2x-15≤31
    15·1 answer
  • Find the mean: 17.4 mm, 20.3 mm, 84.1 mm, 31.2 mm, 53.7 mm, 11.7 mm
    11·1 answer
  • Which statement is true about the polynomial after it has been simplified. -10m^4n^3+8m^2n^6-6m^2n^6
    8·1 answer
  • Water come out of a pipe at a rate of 16 gallons per minute. How many gallons have come out after 4 minutes​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!