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
evablogger [386]
3 years ago
5

A finite geometric series is the sum of a sequence of numbers. Take the sequence 1, 2, 4, 8, … , for example. Notice that each n

umber is twice the value of the previous number. So, a number in the sequence can be represented by the function f(n) = 2n–1. One way to write the sum of the sequence through the 5th number in the sequence is ∑5n-12n-1. This equation can also be written as S5 = 20 + 21 + 22 + 23 + 24. If we multiply this equation by 2, the equation becomes 2(S5) = 21 + 22 + 23 + 24 + 25. What happens if you subtract the two equations and solve for S5? Can you use this information to come up with a way to find any geometric series Sn in the form ∑an-1bn-1?PLEEEEEESE help
Mathematics
1 answer:
Anna [14]3 years ago
3 0

Answer:

Step-by-step explanation:

You might be interested in
Factor the expression x^4 -1 using the polynomial identify x^2-y^2)=(x-y)(x+y)
Orlov [11]

Answer:

(x - 1)(x + 1)(x² + 1)

Step-by-step explanation:

Step 1: Factor Difference of Squares

(x² - 1)(x² + 1)

Step 2: Factor Difference of Squares for non-complex binomial root

(x - 1)(x + 1)(x² + 1)

And we have our answer!

3 0
3 years ago
Reduce 720/1080 little cunfused
Veronika [31]
To reduce a fraction, divide the numerator and the denominator equally until they reach the simplest whole number possible. 

In this case, the numerator (720) and the denominator (1080) can both be divided by 360 to get 2/3, our reduced fraction. 

8 0
3 years ago
Read 2 more answers
Help again and thanks..........
LenKa [72]

Answer:

  • a = $8
  • s = $5

Step-by-step explanation:

When the coefficients don't lend themselves to solution by substitution or elimination, then Cramer's Rule can be useful. It tells you the solutions to

  • ax +by = c
  • dx +ey = f

are ...

  • ∆ = bd -ea
  • x = (bf -ec)/∆
  • y = (cd -fa)/∆

Using that rule here, we find ...

  ∆ = 5·3 -6·2 = 3

  a = (5·54 -6·41)/3 = 5·18 -2·41 = 90 -82 = 8

  s = (41·3 -54·2)/3 = 41 -18·2 = 5

This math can be performed in your head, which is the intent of formulating the rule in this way.

_____

Similarly, if you expect the solutions to be small integers (as here), then graphing is another viable solution method.

_____

<em>Comment on the question</em>

We're sad to see than only 16 tickets were sold to the two performances by the symphonic band.

6 0
3 years ago
Need answer ASAP I’m timed What is the distance between the points (7, 8) and (-8, 0) on a coordinate grid?
Whitepunk [10]

Answer:

17

Step-by-step explanation:

(7, 8)  (-8, 0)

First find how much the point moved in y to the second point.

8-0=8

So one side is 8.

Then find how much it moved in x. 7-(-8)=15

So the other side is 15

This will give you 2 sides of a triangle where one sides lenght is 8 the other is 15. Use the pythagoras theorem which is x squared plus y squared = c squared

8^2+15^2=c^2

64+225=c^2

289=c^2 Take the square root of both sides to solve for C

√289= √C^2

17 = c

3 0
3 years ago
Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared.
neonofarm [45]

Answer:

Step-by-step explanation:

c2+2c+4

(c+2)^2

^ is the exponent

5 0
3 years ago
Other questions:
  • Ten percent of number equals 40 what is the number
    12·1 answer
  • Sheri's freezer is 2 feet wide, 6 feet long, and 2 feet deep. What's the volume of her freezer?
    14·1 answer
  • If the signs of a coordinate of collinear points (-6,-2), (-5,2) and (-4,6) are reversed, would it still be collinear?
    5·1 answer
  • What is 29,678,900,522 in scientific notation?
    8·2 answers
  • PLEASE PLEASE ANSWER
    13·2 answers
  • 6.24 in standard form
    5·1 answer
  • When x=2 and y=4 what is value of 7x-y
    10·2 answers
  • Find the value of w and then x. Round lengths to the nearest tenth and angle measures to the nearest degree.
    6·2 answers
  • FIn the solutions for x:<br> (√x+1) + (√4x+13) = (√3x+12)
    5·1 answer
  • How many 1/3 inches fit into 2 2/3 inches HELP LIKE NOW
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!