Saturday

February 28, 2015

February 28, 2015

Number of results: 2,329

**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*

**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 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*

**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**

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*

**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 (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*

**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*

**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*

**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**

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*

**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*

**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*

**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*

**algebra**

Could someone check my work; 1. Generate the first five terms in the sequence using the explicit formula. yn = 5n 5 30, 25, 20, 15, 10 30, 25, 20, 15, 10 10, 15, 20, 25, 30(my answer) 10, 15, 20, 25, 30 2. What is the 15th term in the sequence using the given ...
*February 3, 2013 by lee*

**pre algebra**

find the common ratio in the sequence 8, 12, 18, 27,..... then write the next three terms of the sequence
*June 20, 2010 by lavena*

**Mathematics**

The 10th term of an arithmetic sequence 17 and the16th is 44,find the first three terms in the sequence
*January 21, 2012 by Tenacious*

**Sequence and series**

If {gn} is a geometric sequenc with gn > 0 for all n is an element of natural number,then prove that {ln gn} is an arthnetic sequence
*January 21, 2012 by Abdela said yimer*

**CALCULUS**

For the sequence below, determine whether they converge or not, and find the limit when the sequence converges. an=4^n/n! an=nsin(1/n)
*June 24, 2012 by AP*

**science**

which rna base sequence would produce the animo acid sequence: Valine ALanine
*March 11, 2013 by mary*

**Number sequence **

Find the next 3 numbers of this sequence 243, 81, 27.
*May 17, 2012 by Marco*

**math**

How will I know the equation of a sequence if it is not arithmetic nor geometric sequence?
*January 5, 2013 by mae*

**Math**

A sequence is given by Un=a(1-2n).determine the first 3 term of sequence
*January 19, 2014 by Dammy*

**Math - Arithmetic & Geometric**

1) Given the terms a35 = 1238 and a70 = 1483 of an Arithmetic. Find the exact value of the term a105 a sequence and sum of sequence. 2) Given a3 = 99 and a5 = 891 of a Geometric. Find the exact value of the term a7 of the sequence and the sum of sequence.
*February 28, 2011 by Student555*

**math**

The Fibonacci sequence of numbers begins 1,1,2,3,5,8,13,21,34,55,
and continues by the rule: every number is the sum of the two previous numbers. a. Determine the next five (eleventh through fifteenth) elements of this sequence. b. Compute the ratio of the fourteenth and ...
*March 7, 2010 by bill*

**Discrete Math **

An arithmetic sequence begins, 116, 109, 102 Find the 300th term of this sequence.
*March 28, 2011 by Francesca *

**algebra 1**

What is a10 for the sequence (an) = 1 + 3 (n - 1)? i go 28 is that correct? What is a7 for the sequence an = 2 + 5(n - 1)? i got 51 is that right 6x+7/5 = x, how do i find x? 30-x/10 = 2, what's the next step in solving this equation?
*April 11, 2011 by jianna*

**Chemistry**

If the base sequence along a segment of DNA were TCGTA,what would be the antisense oligonucleotide synthesised from this sequence?
*April 25, 2012 by Swaastikaa*

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

Given a geometric sequence with a1 = 6 and r = 2/3, write an explicit formula for An, the nth term of the sequence.
*December 3, 2014 by Anonymous*

**Mathematics : Arithmetic Sequence**

Consider the arithmetic sequence x+2, 18-x, 14+x,... a) Find the value of x. b) Find the general term of the arithmetic sequence.
*September 7, 2008 by Charmian*

**Algebra ll**

Help please, I don't understand how to do this... Give an example of an arithmetic sequence that is found in the real world. Find the common difference and write a recursive and iterative rule for the sequence. Use one of the rules to find another term of the sequence. Then ...
*March 19, 2014 by Me and I*

**applicable maths--sequence**

hello, i need some practises on: 1)the language and notation of sequence. 2)Recursive definition for a sequence 3)the Nth therm or general term for a sequence. can someone please give me some useful website regarding the topics above (or any other possible topics relating to ...
*May 3, 2008 by Ann*

**Math**

The 13th termof an arithmetic sequence is 61 and the 20th term of the squence is 82. Calculate the sum of the first 25 terms of the sequence
*December 17, 2011 by Melissa*

**Algebra 2**

The sequence is defined by a recursion formula. Write the first four terms of the sequence: a_1=9; a_n=3a_n-1
*August 7, 2014 by Nan*

**Algebra 2**

The sequence is defined by a recursion formula. Write the first four terms of the sequence; a_1=0; a_n=5a_n-1 +7
*August 7, 2014 by Nan*

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

The nth term of a geometric sequence is given by an = 1/4(4)^n-1. Write the first five terms of this sequence.
*December 3, 2014 by Anonymous*

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