Friday
February 5, 2016

# Search: SeQuEnCeS and SeRiEs: HELP PLZ!

Number of results: 5,462

Math
I'm learning series and sequences (grade 11). Please check that my steps show I understand what I'm doing/the concept and my answer as well: 5. The consecutive terms of an arithmetic sequences are 3.6, y, 8.2. Find the value of y. This seems to be a sequence question but I ...
January 8, 2013 by Crystal

Series and sequences
Three numbers a,b, and c form a geometric series so that a+b+c=35 and abc=1000. Find the values of a,b,c.
January 3, 2013 by Shaira

Math
In sequences and series::: I dont understand the difference between (for arthemtic series) the equations 1) sn= t/2(ti-tn) 2) (n* n-1)/2 where would you use each one and how are they different?
December 12, 2006 by mary11

SeQuEnCeS and SeRiEs: HELP PLZ!
The first three terms of the sequence -8,x,y,72... form an arithmetic sequence, while the second, third and fourth terms form a geometric sequence. Determine x and y.
January 4, 2013 by kazz

Biology
When making comparison of sequences where some are whole genome sequences while others are partial genome sequences, or a specific glycoprotein sequence, How is it that we are able to make comparisons from these sequences if they all have different lengths?
April 21, 2013 by Cristian

Algebra
Using the index of a series as the domain and the value of the series as the range, is a series a function? Include the following in your answer: Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic series? Which one of ...
October 29, 2006 by V

Algebra 2: Sequences and Series
I have this question and I don't understand what it's asking for. It says evaluate, is it asking for the missing term or what? The sequence 21, 23, 25, 27, 29, ..., 41 has 11 terms. Evaluate the related series. * 320 * 341 * 300 * 166 Very confused, any insight on how to solve...
April 3, 2010 by Skye

Math
Using the index of a series as the domain and the value of the series as the range, is a series a function? Include the following in your answer: Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic series? Which one of ...
October 28, 2006 by Vianna

math(sequences)
0.5,1.5,4.5,13.5,... what is the next three terms??? plz help
September 9, 2008 by n'kyla

Functions 11: Series and Sequences
4m + 1, m + 1 and 10 - m are the first three terms of a geometric sequence. Find t4.
January 2, 2013 by lg

math
what method i need to use in solving arithmetic and geometric sequences and series?
February 16, 2013 by luis

Sequences and Series
PreCal. What is the difference between the equations (n(n+1))/2, and n/2(ti+tn)?? Under what conditions would you use them? Thanks much!!!
January 10, 2007 by Cait

math
what formula use in solving or finding for the 9th term of a number in arithmetic series and sequences?
February 16, 2013 by luis

Sequences and Series
use the iterative rule to find the eighth term in the sequence an = 25 − 3n. 176 49<------ My answer 8 1
October 1, 2015 by Sara

biology
Below the human hemoglobin sequence are the first thirty amino acid sequences of several other species’ hemoglobins. Inspect the sequences and answer the following questions: Human) h l t p e e k s a v t a l w g k v n v d e v g g e a l g r l A) ml t a e e k a a v t a f w g k v...
April 1, 2012 by Kim

math 12 - sequences and series
Given the expression Sn = n^2 + 2n for the sume of the first n terms of a series, determine a) An expression, in simplified form, for Sn-1 in tmers of n b) an expression, in simplified form, for the nth terms, tn in terms of n
March 1, 2010 by CL

MATH!!!! SEQUENCES!!!
Find out a formula for the Nth term of each of the following sequences. (i)4 7 10 13 16 (ii)1 3 5 7 9 (iii)20 17 14 11 8 (iv)1 4 9 16 25 (v)2 8 18 32 50
December 14, 2011 by Howler

math sequences and series
how do i solve if t1=1/2 and tn=tn-1+1/n(n+1), determine an explicit formula for the general term. (hint: it is neither arithmetic nor geometric. write out the first few terms)
May 31, 2010 by alicia

LIVING ENVIRONMENT
the ability to grow in size is a characteristic of living organism .Although an icicle may grow in size over time,it is considered nonliving because there is 1)an incerase in matter ,but no increase in the number of icicle. 2)an interaction between the icicle and the ...
February 12, 2013 by tania sharmin

math
identify the value of x that makes each pair of the ratios equivalent x:4 and 45:20 A.8 B.9 C.10 plz plz plz plz help me!!!!!!!! PLZ!!!!!
November 2, 2015 by pankakes

science (check plz)
1)When evolution was first proposed, which of the following was used as evidence to support the idea? A)observations of nature B)laboratory experiments C)extensive fossil collections*** D)genetic sequences
June 12, 2014 by Me

Ms. Sue PLZ HELP!!!(science)
When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature *** B. laboratory experiments C. extensive fossil collections D. genetic sequences
May 18, 2015 by Anonymous

Math
Evaluate 1/3 + square root(3)/12 + 1/16 + square root (3)/64. I hope this makes sense. Right now we're learning sequences and series and I'm really confused on this question.
December 15, 2014 by Jeff

I NEED HELP!!:(!!!! HELP ME PLZ!!
I GOT A FEW QUESTIONS SO what is a cell part that has the funcion of a gel-like material inside cells... and what releases energy into the cell.?? plz plz plz plz HELP!!!
October 20, 2009 by i really need help!!

math plz plz plz plz help plz .....thank you
mark bought a notebook for \$1.45 and some pencils that cost \$0.42 each if the total cost was 6.91,how many pencils did he buy A.12 B.13 C.14 D.15 is 14 the answer plz help thank you
November 23, 2015 by random rainbow

Maths: Sequences need help
The nth term of a sequences of v1,v2,v3 is given by Vn=6 2^n (1):show that for all value of n>1 Vn1=2(Vn-3)?? (2): obtain and simplify the sum of the first n term of the sequence??
September 26, 2015 by Collins

social studies? i think idk
what new ideas came from the automobile? plz help plz plz plz ASAP
December 5, 2015 by Geena

SS plz help me plzzzzzzz
What are the two major forces that reshape earth? Describe how itworks. plz plz plz help me there are no answer choices hope u can still help
November 18, 2015 by #AriannaGirl :)

Math ....urgent help
i just dont get this elimination method ..... plz help me plz.....teach me how to keep the x and y in a parallel line. and which number to multiply.....plz help -5x-4y=-11 10x=-6-y help me plz......
January 7, 2009 by vero

Biology
Humans and Gorillas are very similar in terms of their genetic sequences; in a sample of each of their DNA sequences, only ONE difference was found. MY QUESTION: What genetic mechanism could cause this base sequence change? Thanks!
June 4, 2008 by Millwright

SS PLZ HELP ME ASAP
What are the two major forces that shape and reshape earth? Describe how each one works. plz plz plz help me there are no answer choices hope u can still help
November 18, 2015 by #AriannaGirl :)

Excel Help
3) __________ are used to compare sets of data in one chart. Time series Multiple data series Relative series Comparison series Is multiple data series
July 12, 2009 by Bryan

Algebra 2 Honors
Right now in my class i am learning about sequences and series and im currtently suck on this problem. "A certain sequence is defined recursively by the t1=1 , t2=2, t2n=2t2n-2, t2n+1=3t2n-1. Find the first eight terms of the sequence." thanks for your help.
May 12, 2008 by Stephanie

sequences and series
how do i solve the sum of the first two terms of an arithmetic sequence is 16. the sum of the second and third term is 28. determine the first three terms, algebraically
May 31, 2010 by alicia

math sequences and series
how do i solve the sum of the first two terms of an arithmetic sequence is 16. the sum of the second and third term is 28. determine the first three terms, algebraically
May 31, 2010 by alicia

Let A=a1,a2,…,ak and B=b1,b2,…,bj be sequences of positive integers such that a1≥a2≥⋯ak≥1, b1≥b2≥⋯bj≥1, ∑i=1k ai≤6, and ∑j i=1 bi≤6. For how many ordered pairs of sequences (A,B) satisfying the above ...
May 22, 2013 by Mathslover

biology
a boy inherits genes for tallness,but his growth is limited as a result of poor nitrition. this is an example of 1)an inherited disorder. 2)environmental influence on gene expression . 3)expression of a hidden trait 4)a characterstic controlled by more than one pair of genes. ...
February 8, 2013 by tania sharmin

Calculus
Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3)(+/-)(1/9)(+/-)(1/27)(+/-)...(+/-)(1/3^n)(+/-)... (A) Find x and y from: x(</=)(+/-)3(+/-)1(+/-)(1/3)(+/-)...(</=)y. (B) Can you choose the signs to make the series diverge? (C) Can you choose the signs to ...
April 21, 2010 by Megan

calculus
Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3)(+/-)(1/9)(+/-)(1/27)(+/-)...(+/-)(1/3^n)(+/-)... (A) Find x and y from: x(</=)(+/-)3(+/-)1(+/-)(1/3)(+/-)...(</=)y. (B) Can you choose the signs to make the series diverge? (C) Can you choose the signs to ...
April 22, 2010 by Megan

calculus
Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3)(+/-)(1/9)(+/-)(1/27)(+/-)...(+/-)(1/3^n)(+/-)... (A) Find x and y from: x(</=)(+/-)3(+/-)1(+/-)(1/3)(+/-)...(</=)y. (B) Can you choose the signs to make the series diverge? (C) Can you choose the signs to ...
April 22, 2010 by Megan

IB Math Studies
I saw a similar post earlier. I also want to see who has better memory out of men and women. I was thinking of testing ability to remember a series of simple objects or number sequences. Could I use chi-squared, HOW could I use it? Any other sophisticated processes? thanks.
September 18, 2012 by Louis

I'm creating is HUGE book series. Can you check to see if the blurb is good. The series follows the journey of a teenage girl who is determined to have best year ever in the 8th grade and to have the best 4 year experience in high school. Please make sure if they any grammer ...
July 22, 2012 by Laruen

Algebra 2
I need steps on how to complete this please i am so confused and lost. :( Consider the infinite geometric series x e n=1 -4(1/3) n-1. In this image, the lower limit of the summation notation is "n=1". a. Write the first four terms of the series. b. Does the series diverge of ...
March 10, 2015 by Sammy

math
How many n-digit decimal sequences (using digits 0-9) are there with k 1s? Decimal sequences meaning you can have as many 0s in front of a number. For example: 000001234557891111 would be consider valid. So how do i come up with an equation? See my response to Sana's question ...
October 15, 2006 by Aisha

English plz help quick
what literary term is this and why. I think the world is a series of broken dams and floods.
May 21, 2015 by leo

Plz help!!! algebra
convert the decimal 0.6 to a fraction by writing it as a infinite series. I really have no idea how to do this can anyone please help me?
April 14, 2012 by ashley

Chemistry
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen (nf = 3), Brackett (...
November 10, 2013 by Andy

Calculus
a) Find the Taylor series associated to f(x) = x^-2 at a = 1. Be sure to show the general term of the series. b) Find the radius of convergence of the series. c)Use Lagrange's Remainder Theorem to prove that for x in the interval of convergence with x > 1; the power series ...
August 8, 2011 by laura

Geometry i need hlp urgently plz plz plz
The lenght of a line segement is of 10units and the co-ordinate of one end point are (2,-3) if the abscissa of the other end is 10 find the ordinate of the other end?? Working plz plz
October 18, 2015 by Collins

Calculus
Determine the following about the series. Indicate the test that was used and justify your answer. Sigma (lower index n = 1; upper index infinity) [sin((2n-1)pi/2)]/n A. The series diverges B. The series converges conditionally. C. The series converges absolutely. D. It cannot...
February 11, 2013 by Jenny

Maths
Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000. How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?
April 29, 2013 by ianian

algebra
Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000. How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?
April 29, 2013 by deli

math
for this infinite series (-1)^n/n^2 if i use alternating series test to show that sequence does of a^n does not go to 0, then does this mean that this series is diverging
July 27, 2010 by eng

Arithmetic Series - - Reiny
Consider the series defined by Sn = 3n-1 Find the first four terms of the series. How exactly do I do this?
September 12, 2011 by Anonymous

math
hi if i wanna find the Maclaurin series from another existing series by integrating that series , do i need to include the constant of integration ?? Thanks
May 16, 2010 by William

Calculus
By recognizing each series below as a Taylor series evaluated at a particular value of x, find the sum of each convergent series. A) 1+5 + (5^2)/(2!)+(5^3)/(3!)+(5^4)/(4!)+...+ (5^k)/(k!)+...= B) 1-(2^2)/(2!)+(2^4)/(4!)-(2^6)/(6!)+...+((-1)^(k)2^(2k))/((2k)!) +...=
June 18, 2013 by Cole

Math
Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000 (inclusive). How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?

math
the last two tems in a geometric series are 1080 and 6480 and the sum ofthe series is 7775 what is the first term in the series
December 18, 2011 by Heather

chemistry
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen (nf = 3), Brackett (nf...
November 10, 2013 by a.m

Integral Calculus - Series
Find if series is convergent or divergent. Series from n=2 to infinity (4n+7)/(3n^3 -8n)
November 12, 2015 by John

English
For the essay I have to write I have to talk about examples of sequences and montages (which are transitional sequences of rapidly edited images) for the movie "The Gold Rush" by Charlie Chaplin. I'm having a hard time with examples of montages. Can you help please?
September 26, 2011 by Jon

Chemistry
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen (nf = 3), Brackett (...
November 10, 2013 by Andy

calculus
Consider ∞ ∑ [(3k+5)/(k˛-2k)]ᵖ, for each p ∈ ℝ. k=3 Show this series { converges if p > 1 { diverges if p ≤ 1 Hint: Determine the known series whose terms past the second give an approximate match for the terms of this series. This series...
August 6, 2011 by Bernie

math
the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz
May 30, 2012 by parul

math
the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz
May 30, 2012 by PLZ HELP ME NOW...

Calc 2, Series/Sequences
Explain clearly in detail the difference of the summation of n=1 to infinity of 1/n^2; and the integral of 1/x^2dx with the limit of 1 to infinity, as well. Part 2: Explain the natures of the two expressions and explain why the summation is greater than the integral test. The ...
April 1, 2010 by Alex

pscychology
Could someone pretty plz plz plz help me...What are the 2 biggest parts of the human brain??
March 11, 2009 by Logan:)

plz answer the question we were talking about plz plz. Go back to the problem. I got 184 but the worksheet answer says 136 which is correct?? plz help!! thx
September 13, 2010 by Happy Face

Maths plz help
X^x+y^y=31 x+y=5 plz help i was told to use newton litrate method plz help
December 18, 2015 by Collins

Math (College Level Mathematics)
Fourier sin series for f(x) = 1, 0 < x < Pie is given by 1 = 4/n E 1/ (2n-1) times sin (2n-1) x, (0 < x < n). Using this, find the Fourier sinc series for f(x)= 1, on 0 < x < c where c > 0. Then find the Fourier series for g(x), x > 0 where g(x) = 1, 0...
September 21, 2013 by Joy

Calculus
Obtain the MacLaurin series for 1/(2-x) by making an appropriate substitution into the MacLaurin series for 1/(1-x). ------------ The MacLaurin series for 1/(1-x) = Σ x^k I substitue (x-1) in for x, because 1/(2-x) = 1/(1-(x-1)) Making the same substitution in the ...
June 25, 2009 by Sean

social studies idk
how did the automobile negatively impact society???!!!?!?! PLZ help me I have been on it since morning plz pretty plz cherry on top help me
December 4, 2015 by suzzie

Pre-Calculus
Q.Determine the sum of each infinite geometric series. t_1= 8 r = -2^1/2 ---------------------------------------- A.This is a divergent series because the absolute value of r is greater than 1. ---------------------------------------- Q. The first term of an infinite geometric...
February 17, 2015 by Lucina

Chemistry (Need) 7:00
What characterizes the electron configurations of transition metals such as silver and iron? Thanks Alot in Advance.. Fe is in the 3d transition series and Ag is in the 4d series. Thus, the distinguishing electron for the 3d series enters the 3d orbital while those for the 4d ...
November 12, 2006 by Lance

Calculus
How can I prove this series alternating series converges(this is the answer)? (-1)^2*(2/3)^n I tried it this way: an = (2/3)^n, then i just broke it down. 2^n/(3^n) and i took the ratio of it and got 2/3 which does not equal to one which would mean the series diverges.. but ...
July 26, 2013 by Isaac

A 0.15 kg baseball moving at +26 m/s is slowed to a stop by a catcher who exerts a constant force of -390 N. How long does it take this force to stop the ball? How far does the ball travel before stopping? plz plz plz help!!
December 10, 2007 by julia

College Calculus
Suppose the series An (from n=1 to INF) is known to be convergent. Prove that series 1/(An) (from n=1 to INF) is a divergent series. I have no idea what to do... please help!
March 24, 2008 by Mandy

College Calculus (Binomial Series)
Expand f(x) = (x+x^2)/((1-x)^3) as a power series and use it to find the sum of series (SUM from n=1 to infinity) (n^2)/(2^n) PLEASE HELP.
April 8, 2008 by Andrew

calculus
With power series, is an endpoint convergent if you plug it back into the original series, and get an alternating series that is conditionally convergent?
September 22, 2010 by Bob

math
sorry for before it is my first time using this website and this is the real question in a geometric series t1=23,t3=92 and the sum of all of the terms of the series is 62813. How many terms are in the series?
June 3, 2013 by Bob

Calc II
Use the comparison or limit comparison test to decide if the following series converge. Series from n=1 to infinity of (4-sin n) / ((n^2)+1) and the series from n=1 to infinity of (4-sin n) / ((2^n) +1). For each series which converges, give an approximation of its sum, ...
November 7, 2012 by Lauren

math b50
must answered in sequences/series formulas If the profit earned by a company is \$100 in the first year, and doubles each year such that the profit earned in the second year is \$200, \$400 in the third year and so on. Find the total profit earned by the company in 15 years of ...
June 15, 2010 by sheri

maths
plz i cerious need help i posted dis qustion bt due 2 my wrong typing it was nt anser plz here it is:x^4+3x-2/(x^2+1)=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+(Hx+1)/(x-4)^2.find ABCDEFGH? plz it a partial fraction thank yo u and Godbless u
July 29, 2015 by anthony

Data managment math
5: In the best-of -five hockey series , the probability of winning the next game increases for each team by 0.1 if the previous game was won. If the teams ,the Ironmen and the Mustangs ,are in such a series and at the start of the series are evenly matched, what is the ...
January 28, 2008 by Samir

Calculus
Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!
March 8, 2012 by W

Calculus
Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!
March 8, 2012 by W

trig
for the geometric series shown, state whether the series in convergent. If the series is convergent, give the sum 9 +6.3 + 4.41
November 10, 2008 by jerson

chem
stilll didnt get it .. .. can u plz explain in detail ... how did u get the answer.. plz plz plz plz plzp l zp thnks Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies ...
November 12, 2008 by DR BOOBB Plz HELP

Calculus
please help me...for the power series summation of n^4x^n/2(n-1)factorial....find the radius i am guessing the radius is either x or x/2 but i am still not sure..CAN someone help me plz? PLZ HELP ME...i dont know where to start Take the ratio of two succesive terms and take ...
May 7, 2007 by Maria

math
the "k"th term of a series, Sk=a 1-r^k/1-r, is the sum of the first "k" terms of the underlying sequence. the difference between the "n"th terms of two particular series is greater than 14 for some values of n (is an element of) N. the series with general term tn=100 (11/17)^n...
December 29, 2010 by liza

Biology
(This question ties into the previous question I posted about mRNA). Use the Universal triplet code to determine the sequence of amino acids that would be generated for each of the mRNA sequences that you generated in question 2. Remember that the reading of mRNA goes in the 5...
March 22, 2014 by Danielle

calculus
I need help understanding how the series of e derives into the exponential series using the binomial theorem. Here is a link to a pic of a page in my book, regarding the exponential series: ht tp://i46.tiny pic(.)(com)/qz0oat . jpg (remove parentheses and spaces) A couple of ...
June 5, 2010 by Jimmy

Math
I have a couple questions about the sums of geometric series. One. So the formula for the sum is t(n)=t(1)[(r^n)-1] But if my series starts at t(0), can I change the formula to t(n)=t(0)[(r^n)-1] ? Two. If, in the series, there is a different pattern in the numerator than in ...
October 31, 2010 by Anonymous

calc.
find the sum of the series of (-2)^n/3^n+1. This is an alternating series... what if we rewrite it as an= (1/3)* (-2/3)^(n) Divide any nth term by the n-1 term and see if you get a ratio term r. This might be a geometric series.
April 17, 2007 by kelly

math B30
must be answered with a series/sequences formula over the past 10 years, the number of CD's sold by a mail order music company has increased an average of 12% per year. If the company sold 1.5 million CD's ten years ago, the total number of sales they have made over all ten ...
June 15, 2010 by sheri

Maths
Eric thinks of 2 sequences.One is geometric and the other arithmetic.Both sequences start with the number 3.The common ratio of the geometric sequence is the same as the common difference of the arithmetic sequence.If the 6-th term of the geometric sequence is 96.Find the ...
February 3, 2013 by Lucas

Ms.Sue (ONLY)
can you plz help me in science? PLZ HELP ME! YOU HELP ALL THE TIME! *begs* plz help! i am my knees!!!!! (really i am!) its called "science 8th grade"
March 7, 2012 by sammie doodles :-)

I have a SUPER HUGE project due called National History day and need lots of help with it, plz plz plz help!!!!!
January 20, 2013 by Macy

Plz,plz help!
Can you help me write: real-world scenario in which you would write an inequality rather than an equation? Plz, I really need help! :D
January 21, 2014 by Princess Anna

Calculus i need help plz plz
Integrate:Sinxcosx/a^2cos^2(x)+b^2sin^2(x))dx??? plz i need the full working too hard for me
October 21, 2015 by Collins

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