Monday

February 8, 2016
Number of results: 2,702

**PreCalc - Sequence**

A ball is dropped from a height of 20 ft and always rebounds 1/4 of the distance fallen. A. write a sequence for the first 3 rebound heights B. How high is the 6th rebound? C. Find the sum of all possible rebounds. I keep getting numbers that are too high. I don't think I have...
*July 27, 2011 by Joe*

**precalc**

Determine whether the sequence is geometric or arithmetic. Then give the general formula for the nth term of the sequence. 6.1, 6.9, 7.7, 8.5, 9.3,... I think it is Geometric, but i don't know how to find the formula
*December 5, 2011 by Alex*

**precalc sequence**

5-5^2 = 5-25 =-20 The fifth term is just when n=5 I believe. What is the fifth term of the sequence a sub n=5-n^2? a)-11 b)-20 c)-7 d)-5 I believe that the answer that fits the best is d, but I could be wrong
*March 8, 2007 by Rom*

**PreCalc PLEASE HELP**

Find the common ratio, r, for the geometric sequence that has a1= 100 and a8= 25/32
*March 23, 2014 by Aly*

**PreCalc**

Determine whether the sequence is arithmetic. If so, find the common difference. 4, 16, 64, 256, 1024
*November 12, 2010 by gh*

**MATH**

A new sequence is formed by adding together the corresponding terms of a geometric sequence and an arithmetric sequence. the geometric sequence has a common ratio of 3 and the arthmetric sequence has a common difference of -2. The first two terms of the new sequence are 4 and ...
*February 19, 2015 by charlie123*

**Precalc**

Find the indicated nth term of the geometric sequence. 7th term a5: -2/81 a9: -2/6561 I know the formula is an= a1 r ^ n-1 but I can't figure out how to apply it
*November 13, 2010 by Ande*

**Math**

A sequence is formed by adding together the corresponding terms of a geometric sequence and and an arithmetic sequence.The common ratio of the geometric sequence is 2 and the common difference of the arithmetic sequence is 2.The first term of the new sequence is 1 and the ...
*April 12, 2012 by Piwo*

**Precalc**

The sides of a triangle form an arithmetic sequence with a common difference of 2. The ratio of the measure of the largest angle to that of the smallest angle is 2:1. Find the area of the triangle. Please help!
*May 26, 2008 by Megan*

**Math**

Alpha writes the infinite arithmetic sequence 10, 8, 6, 4, 2, 0... Beta writes the infinite geometric sequence 9, 6, 4, 8/3, 16/9,... Gamma makes a sequence whose n^th term is the product of the n^th term of Alpha's sequence and the n^th term of Beta's sequence: 10*9,8*6,6*4,4...
*September 15, 2013 by Speedo*

**arthmetic sequence**

the third of an arithmetic sequence is 14 and the ninth tern is -1. Find the first four terms of the sequence.
*January 23, 2016 by antonia*

**Maths**

In the sequence 3,p,q,24 are the first four terms.determine the values of p and q if the ,(a)the sequence is geometric .(b)the sequence is arithemetic
*February 25, 2015 by Rabelani*

**Math**

1. Find all values of p so that 6p, 4p-1, p^2 - 1 will be an arithmetic sequence. 2. The common ration of a geometric sequence is -3. IF the terms of this sequence are 3y, y+6, z+1, ..... respectively, what is the value of z?
*March 13, 2015 by Lily*

**Urgent math**

how do I do this can any body show me how? An arithmetic sequence begins 4, 9, 14, 19, 24, . . . . (a) Find the common difference d for this sequence. d = (b) Find a formula for the nth term an of the sequence. an = (c) Find the 35th term of the sequence. a35 =
*August 15, 2015 by Aileen *

**Math for Educators**

The first difference of a sequence is 8, 12, 16, 20,... The sum of the first two terms of the original sequence is 14. Find the first three terms of the original sequence. The first term of the original sequence is? 4 What is the second term of the original sequence? 8 What is...
*June 4, 2013 by Carol*

**geomatry**

a sequence begins -4,1,6,11 find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of reasoning inductive or deductive, do you use when solving this problem?
*October 24, 2011 by manal*

**Biology**

I am totally confused by what to do here: GGG CAT GGT CCT ATT TAC DNA coding strand sequence: DNA non-coding strand sequence: mRNA sequence: Amino acid sequence:
*October 31, 2007 by Jen*

**PreCalc**

1) Determine the value of r (put this number in the first blank) and then determine the value of the 10th term of the geometric sequence. Do not use any decimals or mixed numbers in your answers. Reduce all fractions to lowest terms. a1 = 2 and a4 = −1/4 2)Find d and ...
*July 16, 2012 by Anonymous*

**Algebra**

True or False 1. 5, 5, 5, 5, 5,
is an arithmetic sequence. 2. In an arithmetic sequence, it is possible that the 13th term is equal to its 53rd term. 3. In an arithmetic sequence, the common difference is computed by subtracting the first term from the second term ...
*September 9, 2014 by Ruby*

**math **

The 3rd term in an arithmetic sequence is 12, the 7th term is 24, a) How many common differences are there between a_3 and a_7? b) What is the common difference of the sequence? c) What is the first term in the sequence? a_1 d) What is the expression for this arithmetic sequence?
*May 21, 2014 by edwin*

**Algebra ASAP**

pls pls help out A geometric sequence begins 36, 9, 9/4, 9/16, 9/64, . . . . (a) Find the common ratio r for this sequence. r = (b) Find a formula for the nth term an of the sequence. an = (c) Find the tenth term of the sequence. a10 =
*August 14, 2015 by hey*

**Math 12 **

sum of 2nd and 5th terms of a geometric sequence is 13. the sum of the 3rd and 6th is -39. determine: a) the ratio "r" of the sequence b) the first term "a" of the sequence
*January 5, 2011 by Serina*

**math**

the ninth term of an arithmetic sequence is 23 and the 33rd term of the sequence is -241 , calculate the sume of the first 15 terms of the sequence , using the formula s=n(2a+(n-1)d)/2
*December 18, 2011 by Poppy*

**math Help plz**

1.Given a geometric sequence with a_1=6 and r=2/3, write an explicit formula for a_n, the nth term of the sequence. 2.A geometric sequence has a_4=4 and a_5=7. What is a?
*November 30, 2015 by Kenneth*

**Math: Arithmetic Sequence.**

the 3rd of an Arithmetic sequence is 8 of the 16th term is 47. Find a subed 1 and the common difference. Construct the sequence.
*June 4, 2015 by Jan*

**math**

If An is defined as a geometric sequence, is the sequence 1/An also a geometric sequence? Can someone help explain how I can figure out this statement?
*December 14, 2015 by jjenng*

**algebra**

the seventh term of a arithmetic sequence is 72 and the tenth term of the sequence is 90. if the sequence is defined by a formula f(n), then find f(2). How would you do this?
*January 11, 2016 by danielle*

**math**

in an arithmetic sequence the common difference is equal to 2.the first term is also the first term of a geometric sequence. the sum of the first 3 terms of an arithmetic sequence and the sum of the first 9 terms of an arithmetic sequence form the 2nd and 3rd terms of a ...
*January 30, 2015 by Brainblocked*

**Biology**

pair up your nucleoide sequence with the mRNA sequence then you will find from the amino acids in the codons what amino acids are present in the lactase production. Each dna sequence coincincids with the appropriate mRNA sequence unless there is a mutation can someone please ...
*April 7, 2007 by Anonymous*

**Pre-Calc/Trig...**

If An is defined as a geometric sequence, is the sequence 1/an also a geometric sequence? Explain your reasoning
*December 3, 2014 by Anonymous*

**math**

Determine whether the sequence is a Fibonacci-type sequence. If it is, determine the next two terms of the sequence. -4, 5, 1, -3, -2
*November 24, 2015 by crystal*

**Algebra 1 Honors**

Write an equation for the nth term of the arithmetic sequence. Then graph the first five terms in the Sequence. -3,-8,-13,-18 I got 5n-8 as my formula. Then plugged 5 in for n and got 17 for the 5th number in the sequence. Is this correct?
*January 9, 2016 by Anonymous *

**Sequence**

What is the fifth term of the sequence a sub n = 1/3^n? a)1/12 b)1/81 c)1/243 d)1/15 If the sequence starts at n = 1 (there is no reason why it should) then it is 1/243
*March 8, 2007 by raven 31791*

**Can someone help me?!**

The 1st, 5th and 13th terms of an arithmetic sequence are the first three terms of a geometric sequence with a common ratio 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
*January 3, 2013 by Jm*

**Science**

The following DNA sequence represents a eukaryotic gene. Indicate which is the template and which is the coding strand, determine where transcription begins (assume it ends at the end of the sequence presented), write out the nucleotide sequence of the initial transcript and ...
*March 7, 2012 by HomeworkHatesMe*

**Precalc**

Hello, good afternoon. I need help with my precalc hw. we are learning about finding zeros I dont which method I should use for this problem: if i is a zero of x^3+3x^2+ix+(4+i) what do i do? synthetic divison? or long division? when i did long division i got a werid ...
*October 14, 2008 by Samya*

**algebra**

can you check my answers please? What are the first three terms of the sequence: a1 = 3 and an = 2(an1)2? 2, 8, 18 3, 18, 648 --3, 32, 50 2, 6, 12, 24 What is the 14th term in the sequence: an = 4n + 13? -43 43 __> -69 69 What is the recursive rule for the sequence: −...
*March 22, 2012 by Jennifer*

**math**

The 1st,5th,13th term of an arithmetic sequence are the first 3 terms of geometric sequence with a common ratio of 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
*April 9, 2015 by zack*

**Math (fibonacci**

A sequence of numbers is called a Fibonacci-type sequence if each number (after for the first two) is the sum of the two numbers which precede it. For example, 1, 1, 2, 3, 5, 8 ... is a Fibonacci- type sequence. If 1985, x, y, 200 are four consecutive terms in a Fibonacci-type...
*August 8, 2014 by Lexmo*

**Math - Geometry**

Please help! Need to find the 6th and nth terms in this sequence - and solve for the rule or process. here's the sequence: 1,3,9,27,81 What is the process or formula to get the nth term in the sequence. Thanks!
*October 17, 2010 by Daniel*

**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*

**Math**

1. Find the sum of the first five terms of the sequence 2/3, 2, 6, 18, ..... 2. Is this a geometric sequence? 2x, (4x-2), (6x-4), ..... 3. Show the equivalent values of the decimal 0.7575757575..... in fraction form. 4. What is the sum of the geometric sequence 4/3, 2/3, 1/3, ...
*October 16, 2014 by Brianna*

**Math**

first three terms of a geometric sequence are the same as the 1st, 9th and 11th terms of an arithmetic sequence, respectively. What is the common ratio in the geometric sequence ? Thanks!
*May 12, 2012 by Matthew*

**Geomatic Sequence**

In a geomatic sequence, the seventh term exceeds the fifth term by 1920. Find the sum of the first eleven terms if the common ratio of the sequence is 2.
*October 1, 2012 by Nina*

**geomatry deductive reasoning**

a sequence begins -4,1,6,11 find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of reasoning inductive or deductive, do you use when solving this problem?
*October 23, 2011 by manal*

**geomatry deductive reasoning**

a sequence begins -4,1,6,11 find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of reasoning inductive or deductive, do you use when solving this problem?
*October 23, 2011 by manal*

**sequence**

defining function is f(x) = 3x+b. If 27 is a member of this sequence, what is the next consecutive member of this sequence? PLEEEEAAAASEEE HELLLLP meeee f(x)=3x+b f(x+1)= 3x + 3 + b so there is a difference of 3 between numbers. Next number is 27 + 3
*January 16, 2007 by Lori*

**Math**

1. Find the 12th term of the arithmetic sequence 2, 6, 10,
. 2. Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3. 3. In the sequence 2, 6, 10,
, what term has a value of 106?
*June 15, 2014 by Annika*

**geometric sequence**

The sum of the 2nd and 5th terms of a geometric sequence is 3.5. The sum of the 3rd and 6th is -7. Determine the ratio r of the sequence and the first term a.
*September 27, 2014 by h*

**math sequence**

the first 5 terms of a linear sequence are given below: 8,6,4,2,0... What is the 100th term in the sequence? A. -192 B. -190 C. -108 D. -90 I could figure this out in like 5 minutes, but I know there's a pattern I can't remember to figure it out quicker.
*October 14, 2011 by robby*

**Math**

Consider the sequence 2, 6, 18, 54,... Let n = the term number in the sequence. Let A(n) = the value of the nth term in the sequence. A(1) = 2 = 2 X 3^0 A(2) = 6 = 2 X 3 = 2 X 3^1 A(3) = 18 = 2 X 3 X 3 = 2 X 3^2 A(4) = 54 = 2 X 3 X 3 X 3 = 2 X 3^3 What is the relationship ...
*January 28, 2014 by Anonymous*

**Algebra Help**

Consider the sequence 2, 6, 18, 54,... Let n = the term number in the sequence. Let A(n) = the value of the nth term in the sequence. A(1) = 2 = 2 X 3^0 A(2) = 6 = 2 X 3 = 2 X 3^1 A(3) = 18 = 2 X 3 X 3 = 2 X 3^2 A(4) = 54 = 2 X 3 X 3 X 3 = 2 X 3^3 What is the relationship ...
*January 28, 2014 by Anonymous*

**Biology**

Convert the following DNA sequence into its RNA equivalent and then using the genetic code, convert that RNA sequence into the amino acid sequence. 5ββTACTTCTTCAAGACT-3β For this above DNA sequence, what information is contained in the genetic code for the first and last...
*April 13, 2009 by Sherri*

**Math**

1. Find the sum of the first five terms of the sequence 2/3, 2, 6, 18, ..... My answer is 242. Am I right? 2. Which of these two sequences form a geometric sequence: 2x, 4x-2, 6x-4, ..... OR x+1, 2x+2, 5x+1, .....? Find the value/s of x and what is the sequenced formed? I ...
*October 17, 2014 by Brianna*

**college**

The first difference of a sequence is 6, 10,14,18. The sum of the first two terms of the original sequence is 24. Find the first three term of the original sequence. the first term of the original sequence is?
*June 8, 2010 by KIM*

**Mathematics : Arithmetic Sequence**

The 5th term and the 8th term of an arithmetic sequence are 18 and 27 respctively. a)Find the 1st term and the common difference of the arithmetic sequence. b)Find the general term of the arithmetic sequence.
*September 7, 2008 by Charmian*

**Math**

1. What are the next two terms of the following sequence? -3, 1, 5, 9... 2. What are the next two terms of the following sequence? -2, 4, -8, 16... 3. What is the common difference of the following arithmetic sequence? 13, -7, -27, -47... 4. What is the ninth term of the ...
*January 15, 2011 by Melanie*

**arithmetic sequence**

the 40th term of an arithmetic sequence is equal to the sum of the 20th and 31st term. if the common difference of the sequence is-10. find the first term.
*August 4, 2015 by hoho*

**maths**

The common ratio r of a geometric sequence satisfies the quadratic equation 2r squared - 3r -2 = 0. If the sum to infinity of the same sequence is 6, explain why, in this case, r can only take on one value, and hence state the common ratio, r. Also, show that the first term 'a...
*October 19, 2007 by jen*

**Discrete Math **

I want to verify that this is correct: An arithmetic sequence begins, 116, 109, 102 Determine whether -480 belongs to this sequence, if it does, what is its term number? -480 = 116 + (n - 1)(-7) n - 1 = 85.142. . . So, that means -480 does not belong to this sequence, right...
*March 29, 2011 by Francesca *

**math**

find the rule for the Nth term of the arithmetic sequence. 11/2, 25/6, 17/6, 3/2, 1/6..... If you change the denomators to 6, you should notice the numerators follow the sequence: 33,25,17,9,1,...which is an arithmetic sequence with a common difference of -8 so term(n) = -8n...
*April 1, 2007 by brandon*

**Biology**

Produce a nucleotide sequence with a single base-pair substitution mutation that still produces the same amino acid sequence. Indicate the site of the mutation and explain why the amino acid sequence is not affected.
*March 15, 2009 by Tanya*

**Genetics**

Given the sequence of bases in the sense strand of DNA shown below, please answer the following questions. 5'-ATGTTTCCCCAGAAGAGGTATGGGAAAAAGATTTGA-3' a. Show the sequence of bases in the messenger RNA encoded by this gene. I'm not sure what this means. I looked up "sense ...
*November 4, 2009 by Jenna*

**Sj**

Mathematics......Under number patterns-Geometric series If a question goes.determine the expression for the nth term of the following sequence if the a) 4th term is 24 and the 7th term is 192 in a geometric sequence.what formula do i use here?because i dont have the whole ...
*July 16, 2015 by Mahlogonolo*

**Maths**

1..The first 2 terms of a geometric progression are the same as the first two terms of an arithmetic progression.The first term is 12 and is greater than the second term.The sum of the first 3 terms od the arithmetic progression is 4/3 less than the sum of the first 3 terms of...
*February 3, 2013 by Lucas*

**Mathematics arithmetic sequence**

The sum of second and sixth terms of an arithmetic sequence is 4. The third term is 24 more than eleventh term. So determine the first three terms of the sequence.
*January 18, 2015 by Mirriam*

**URGET!!**

DOING A 20 QUESTION MATH TEST AND GOT STUCK ON THESE PROBLEMS!!:( 1.find the three terms in the sequence 30,22,14,6,.... 2.write a rule for the sequence 4,8,16,32 3.find the first-four terms of the sequence represented by the expressed sequence 3n + 5. 4.a gas station charges ...
*January 29, 2015 by MS SUE OR ANYBODY PLZ HELP URGENT!!!:(*

**math**

the first number of a sequence is 200. every number of the sequence after the first is 100 less than twice the preceding number. what is the 5th number of the sequence
*July 24, 2013 by anonymous*

**MATH**

the first number of a sequence is 200. every number of the sequence after the first is 100 less than twice the preceding number. what is the 5th number of the sequence
*July 24, 2013 by Help!!*

**Stats/ Probability **

Repeated die toss experiment. A fair die is tossed repeatedly, and the sequence of numbers that turn up is recorded, until a 1 is obtained. When a 1 is obtained, the experiment is over, but the 1 is included in the sequence. Thus every outcome is a sequence of integers ending ...
*September 29, 2013 by denim*

**Math**

1. What is the tenth term of the geometric sequence whose first term (a1) is 16 and the common ratio (r) is ½? 2. Given the terms a10 = 3 / 512 and a15 = 3 / 16384 of a geometric sequence, find the exact value of the first term of the sequence.
*June 18, 2014 by Jade*

**Math**

Which explains why the sequence 64, 4, 1/4,... is arithmetic or geometric? A. The sequence is geometric because it decreases by a factor of 1/16. B. The sequence is arithmetic because it decreases by a factor of 1/16. C. The sequence is geometric because it decreases by a ...
*March 24, 2015 by Angel*

**math**

in an arithmetic sequence whose first term is 4, the 1st, 3rd and 7th terms form consecutive terms of geometric sequence, find the sum of the first three terms of the arithmetic sequence
*December 20, 2015 by selina*

**math30**

Sequences 1)A sequence has a first term of 24 and every other term is one half of the previous term. a)Write the first four terms of the sequence. b)Find a recursive formula that defines this sequence. c)Find an explicit formula that defines this sequence. This will be ...
*August 8, 2012 by alejandro*

**Math**

make a table of values for the sequence 6,11,16,21,26 b) write an algebraic expression for the general term of the sequence. c) Use ur expression for the general term to calculate the 25th term in the sequence. Please help asap
*October 2, 2013 by Asap*

**Math**

The first three elements of a number sequence are 1, 2, 3. ( As you can see, the middle number is one less than the product of its neighbors. This is true for the rest of the elements of this sequence. Now add the elements of the sequence up to a certain element. Could this ...
*October 4, 2009 by Diana*

**AP and GP**

1) Given the terms a35 = 1238, a70 = 1483 of an AP. Find the exact value of the term a105 a sequence, and sum of sequence. 2) Given the term a3 = 99 and a5 = 891 of GP. Find the exact value of the term a7 of the sequence and the sum of sequence.
*February 27, 2011 by Newbie*

**math**

help me with sequences problem.So if the sequence is 2,5,10,17,26 +3 +5 +7 +9 1st difference +2 +2 +2 2nd difference then the nth term can be worked out by writing out : n 1 2 3 4 n squared 1 4 9 16 original sequence 2 5 10 17 nth term= n squared+1 but what about this question...
*May 9, 2009 by Anonymous*

**math **

The first and second terms of an exponential sequence (G.P) are respectively the first and third terms of a linear sequence (A.P). The fourth term of the linear sequence is 10 and sum of its first five terms is 60. find (a) the first five terms of the linear sequence and the ...
*February 1, 2016 by Majors *

**math**

I fyou start with 2 and count by 4s until youreach the number 202, you will have the following number sequence. 2, 6, 10, 14...202 If 2 is the first number in the sequence, 6 is the second and so on, what number in the sequence is 202?
*March 15, 2010 by trinity*

**maths**

consider the sequence given by U1=-0.3 Un+1=Un+0.7 i)state what type of sequence this is. ii)write down the first 4 terms of the sequence. iii) find a closed form for sequnce. iv) use the closed form to find the nth term of the sequnce when Un=36.1 (n=1,2,3 ETC)
*November 2, 2007 by cecilia*

**math**

suppose an arithmetic sequence and a geometric sequence with common ration r have the same first two terms. show that the third term of the geometric series is r^2/(2r-1) tomes the third term of the arithmetic sequence
*February 17, 2009 by isa*

**Math**

1. The fourth and seventh terms of a geometric sequence are 6 and 384, respectively. What is the common ratio and the sixth term of the sequence? 2. The fifth and eight terms of a geometric sequence of real numbers are 7! and 8! respectively. What is the first term?
*March 13, 2015 by Penny*

**mathematis**

consider the arithmetic sequence:-4;-1;2;5...if the nth term of the sequence is 74 determine the value of n
*March 5, 2014 by mmatshepho*

**alegebra**

A sequence has the following pattern 3/2,4,15/2,12,35/2,24.Starting n=1 find the general term for the sequence?
*April 11, 2015 by joel*

**math help**

4,9,x,37 is a quadratic sequence (a)show that x=20 (b)determine the nth term of the sequence thanks in advance
*June 4, 2015 by happy*

**Math (sequence)**

Find the first four terms of each sequence. A1= 2 A2=5 An=An-1 + An-2, n≥3
*December 11, 2010 by Robo123*

**math**

Given the sequence 17, 21, 25,...589 a) Find the 123rd term in this sequence.
*October 25, 2011 by Danielle*

**algebra 2**

A sequence is defined recursively by a1=1,an=(an-1+1)^2. Write the first 4 terms of the sequence.
*May 23, 2012 by jenny*

**sequence math**

Find the sum of the first 27 terms of the following sequence: 10, 18, 26 . . .
*June 28, 2012 by elito*

**maths**

Consider the sequence 1,-2, 3,-4, 5, -6,.........., n(-1)^(n+1) What is the average of first 300 terms of the sequence?
*January 3, 2013 by Anonymous*

**math**

fill the sequence 8, 23, 44,74, 116 next two terms of sequence
*January 30, 2013 by mira*

**math**

if 1,x,y is a geometric sequence and x,y,3 is an arithmetic sequence, compute the maximum value of x+y
*April 27, 2013 by Sarah*

**math**

find the missing terms for the following sequence geometric sequence 96,__,__,__,6
*April 13, 2015 by john*

**Maths**

Given the sequence:4;x;32.Determine the value(s) of x if the sequence is: 1.arithmetic 2.geometric
*August 23, 2015 by Irene*

**probability**

Problem 3: Checking the Markov property For each one of the following definitions of the state Xk at time k (for k=1,2,
), determine whether the Markov property is satisfied by the sequence X1,X2,
. A fair six-sided die (with sides labelled 1,2,
,6) is rolled repeatedly and ...
*May 14, 2015 by RVE*

**Sequence**

What is the fifth term of the sequence a sub n=5-n^2? a)-11 b)-20 c)-7 d)-5 I believe that the answer that fits the best is d, but I could be wrong.
*March 8, 2007 by raven 31791*

**math**

if an is a geometric sequence where a1=4 and the sum of an=12. how would you find the common ratio of the sequence? please help
*May 10, 2009 by mike*

**arithmetic**

The first term of a quadratic sequence is 8 and it's fourth is 32. If the second difference of the sequence is 2, find Tn.
*March 21, 2011 by Tk*

**math**

An arithmetic sequence is represented in the following table. Enter the missing term of the sequence. 10,-2,-14,-26,?...
*April 16, 2013 by mari*