# 1)Find the sixth term of the geometric sequence for which a1=5 and r=3 A)1215 B)3645 C)9375 D)23 I chose A 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3... A)aN=-12(1/3)n-1 B)aN=12(-1/3)n-1 C)aN=-12(-1/3)-n+1 D)aN=-12(-1/3)n-1 I chose C 3)Find

92,916 questions, page 7
1. ## arithmetic

Find the sum of the first 25 terms of an arithmetic sequence whose 7th term is −247 and whose 18th term is −49.

asked by jae on May 26, 2012
2. ## mathematics sequence need help

4, 10, 16, 22,... are the A.P obtained from the 1st differences of a Quadratic Sequence with a 1st term of 3. Determine the formula for the sequence & hence its 25th term plz show step

asked by adn on March 29, 2017
3. ## Algebra 1B

A geometric sequence is defined by the recursive formula t1 = 64, tn= tn-1/2 where n ∈N and n > 1. The sequence is A)-64, -16, -8, -4, -2, -1, ... B)64, 16, 8, 4, 2, 1, ... C)64, 32, 16, 8, 4, 2, ... D)64, 128, 256, 512, 1024, 2048, ... The answer is C

asked by Soleil on February 22, 2019
4. ## algebra

1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 an=a1+(n-1)d a20=3+(20-1)7 a20=3+(19)7 a20=3+133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9

asked by Marissa on August 26, 2007
5. ## Further maths

The first term of a linear sequence is 3 and the 8 term is 31. Find the common difference

asked by Zainab on February 6, 2017
6. ## math

Find the next term and the nth term of the sequence: 2+4, 8+4, 18+4, 32+4, 50+4,... a) 72 + 4 and 2n2+4 b) 68 + 4 and 68n2 + 72 c) 86 + 4 and 90 + n2

asked by Renee on January 4, 2009
7. ## Further maths

Find the sum of the first eight terms of a linear sequence whose first term is 6 and last term is 46

asked by Agatha on February 7, 2019
8. ## maths

The fifth term of a linear sequence is 17 and the third term is 11, Find the sum of the first seven terms

asked by De-Graft on November 6, 2010
9. ## Geometric Progression

The first five terms of a sequence are 9,16,25,36,49,.....find A) the 8th term. B) the nth term?

asked by Mutakai Rennie on July 6, 2015
10. ## Math

Find the sum of the first 8 terms of a linear sequence whose first term is 6 and last term is 46

asked by Okoro Jennifer on November 25, 2018
11. ## Maths

Find the sum of the first eight terms of a linear sequence whose first term is 6 and whose last term is 46

asked by Israel on February 13, 2017
12. ## math

find the first and the 15 ters of an arithmetic sequence whose fifth term is -1 and ninth term is 11.

asked by Haise on June 7, 2018
13. ## math

Find the arithmetic sequence if the fourth term is -6 and the eleventh term is -34

asked by Lucia on February 19, 2013
14. ## math

the first term of a linear sequence is 5,nd d common difference is -3 find the 15 term

asked by mimi on February 24, 2013
15. ## maths - fixed points

Fixed points of f? f(x) = 1/4x^2 - 1/8x - 5/8 a) use algebra to find the fixed points and classify them. b) use the gradient criterion to determine an interval of attraction for one of the fixed points of f c) find exact values of the 2nd and 3rd terms of

asked by Anonymous on May 22, 2008
16. ## math

first term of the arithmetic sequence is 13. two other terms of the sequence are 37 and 73. common difference is consecutive terms integers. determine all possible values for 100th term.

asked by Riana on January 2, 2013
17. ## 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

asked by cecilia on November 2, 2007
18. ## math

(1) if the second and fourth term of a G.P are 8 and 32 respectively,what is the first term? (i need a practical solution please.) (2)the eleventh term of an A.P is 25 and its term is 3 find common difference? (also need practical solution.) (3)given the

asked by cadarii on December 29, 2010
19. ## math

if 1,x,y is a geometric sequence and x,y,3 is an arithmetic sequence, compute the maximum value of x+y

asked by Sarah on April 27, 2013
20. ## math

I was just wondering, what is the difference between an arithmetic sequence and a geometric sequence?

asked by mariam on March 2, 2017
21. ## Math

Tell whether the sequence is geometric. If it is, find the common ratio. 1.) 9, -6, 4, -8/3 2.) 16, 12, 8, 4

asked by Tami on April 21, 2015
22. ## Algebra II

Find the rule for each geometric sequence a3 = -4, a6 = 500

asked by Austin on May 23, 2019
23. ## Algebra

find the numbers of this geometric sequence: 8, __ , __, __, 648

asked by leo on July 30, 2018
24. ## math

Find the sum of the first 15 terms of the geometric sequence. ∞ Σ 3n − 1 n = 1

asked by ben on May 13, 2018
25. ## Math

Find r in a geometric sequence if A=2 and A10=1024

asked by Dave on June 23, 2015
26. ## math 213 #18

A student claims that every prime greater than 3 is a term in the arithmetic sequence whose nth term is 6n + 1 or in the arithmetic sequence whose nth term is 6n – 1. Is this true? If so why?

asked by dan on April 13, 2010
27. ## math

A student claims that every prime greater than 3 is a term in the arithmetic sequence whose nth term is 6n + 1 or in the arithmetic sequence whose nth term is 6n - 1. Is this true? if so, why?

asked by Andy on December 23, 2010
28. ## Math (Algebra)

How many distinct geometric progressions are there, such that the first term is 1, the last term is 1024 and every term is an integer?

asked by Arnau on May 2, 2013
29. ## Math

Identify the pattern and find the sixth term: 3, 32,34,38,3^__,3^__,

asked by Renee on January 5, 2012
30. ## math

the sequence 4;9;x;37;...is a quadratic sequence. a) calculate x. b) determine nth term of the sequence

asked by paseka on July 2, 2016
31. ## Maths

The 5th,9th and 16th terms of a linear sequence A.P are consecutive terms of an exponential sequence.Find the common difference of the linear sequence in terms of the first term.

asked by Ande on July 10, 2018
32. ## arithmetic

Write the nth term of the following sequence in terms of the first term of the sequence. 10, 20, 40, . . .

asked by tyler on May 6, 2011
33. ## Algebra

5. The local soccer team won the championship a several years ago, and since then, ticket prices have been increasing \$20 per year. The year they won the championship, tickets were \$50. Write a recursive formula for a sequence that will model ticket

asked by Sandra on April 16, 2015
34. ## Geometry

n:1,2,3,4,5,6 f(n):0,1,3,6,10,15 find the nth term and the 20th term in the sequence

asked by Skylar on October 3, 2010
35. ## maths

The fifth term of an arithmetic sequence is 23 and the 12th term is 72. What is the value of the 10th term. Which term has a value of 268.

asked by Anonymous on January 18, 2016
36. ## Math

Determine whether this sequence is arithmetic or geometric. Find the next three terms. 4. 3, 12, 21, 30, .... A.40, 50, 60 B.38, 46, 54 C.39, 48, 57 D.36, 32, 39 A? Thank you

asked by Morgan on April 16, 2015
37. ## Algebra 2

Find the sum of a finite geometric sequence from n = 1 to n = 7, using the expression −4(6)n − 1.

asked by Mildred on August 5, 2014
38. ## algebra 1

how do you find the area or geometric sequence of the explicit formula

asked by Dakota Rodriguez on April 10, 2015
39. ## algebra

I have to find the five terms in geometric sequence in this a(lower n)= (2)^n-1 I would do it 2(1)+2(2)+(2(3)+2(4)+2(5) so 2,4,6,8,10 Did I do this correctly??

asked by Alaska Diamond on September 26, 2013
40. ## math

Find all possible calues of the common ratio of the geometric sequence a,b,6, ... if a+b = 1.

asked by NEEDHELP!!!! on November 8, 2011
41. ## math

how dO find the missing terms for the geometric sequence o,?, ?, ?...... 16, 40, 100......

asked by SHERYL on March 31, 2011
42. ## MATH HELP!

find all possible values of the common ratio of the geometric sequence a, b, 6, ... if a+b=1

asked by Katie on November 7, 2011

Find the common ratio, r, for the geometric sequence that has a1= 100 and a8= 25/32

asked by Aly on March 23, 2014
44. ## Algebra IMPORTANT

2k+ 5k+1 + 10k+2 are three successive terms of a geometric sequence find the value(s) of k

asked by Anonymous on April 21, 2015
45. ## biology

Hemoglobin is a critical oxygen-carrying protein. The protein functions as a tetramer with two α-globin subunits and two β-globin subunits. Individuals homozygous for a specific single point mutation in the region that encodes the sixth amino acid in

asked by Anonymous on May 2, 2013
46. ## math

Three numbers form a geometric progression. If the second term is increased by 2, then the progression will become arithmetic and if, after this, the last term is increased by 9, then the progression will again become geometric. Find these three numbers.

asked by Anonymous on January 28, 2017
47. ## Math

The nth term of a sequence is n(n+1). 1. Is 51 a term in the sequence? 2. Which term is 182?

asked by Dk on April 22, 2019
48. ## math

In a Geometric progression the sum of its first 4 term is equal 15, and the sum of the next term is equal to 15/16. find its first term and its common ratio

asked by Ali on November 5, 2010
49. ## math

5hexponent2/5 =3645/5 find the value of h

asked by Pamela on September 20, 2014
50. ## math B30

If the seventh term of a geometric series is 192, and the first term is 3, find the sum of the first 8 terms of the series

asked by alix on June 15, 2010
51. ## Mathematics

The sum of the geometric progression a,ar,ar^2,ar^n-1 is S the product of these n term s is P. Find R,the sum of the reciprocals of these n term s and show that (S/R)^n=P^2

asked by Anonymous on July 19, 2018
52. ## math30

The sum of the first 10 terms of the geometric sequence -4, 6, -9,..., to the nearest tenth, is; The answer is: For the geometric series a=-4, r=-1.5 or -3/2, n=10. Sn= a(r^n - 1)/r - 1 S10= -4((-1.5)^10 - 1)/-1.5 - 1 S10= 90.7 My question is from where

asked by alejandro on August 23, 2012
53. ## Algebra help PLEASE?

14, 8, -16, 32... Arithmatic. 64, 128, 256 geometric, -64, 128, -256 geometric, -48, 64, -80*** the sequence is neither geometric nor arithmatic 81, 27, 9, 3.. aruthmatic , 0,-3,-6 geometric, 0,-3,-6 geometric, 1, 1/3, 1/9

asked by Aniston on April 21, 2014
54. ## math

How will I know the equation of a sequence if it is not arithmetic nor geometric sequence?

asked by mae on January 5, 2013
55. ## Maths

Let the inductive sequence (Un) be given by Un+1= 1/3Un +4, U0=2, the value of L which the sequence. Un=Un-L, is a geometric one is? a) L=6, b)L =8. c ) L=7 d) L=9

asked by Becky on July 11, 2019
56. ## Maths

Given the sequence:4;x;32.Determine the value(s) of x if the sequence is: 1.arithmetic 2.geometric

asked by Irene on August 23, 2015
57. ## Quick math help

Find the sum of the first 10 positive integers Is it 110? Which term of the arithmetic sequence is 25? -2,1,4,... Is it 70? Which term of the arithmetic sequence is177? 2,9,16,... Is it 1234? Find the sum of the first 8 positive odd integers. Is it 64?

asked by Anonymous on October 10, 2016
58. ## math

A number pattern has 75 as its first term. The rule for the patterm is subtract 6. What is the sixth term ? a).39 , b). 45 , c). 51 , d). 69. My answer is a).39

asked by Anonymous on February 24, 2014
59. ## Calc

Find the sum of the terms of the finite geometric sequence 1, -2, 4, -8, ...,-8192.

asked by Timofey on August 17, 2012
60. ## Math

Identify the sequence as arithmetic, geometric, both, or neither 1.7,9,11,13 A. Arithmetic B. Geometric C.both D.neithier 2. 2,1,1/2,1/4 A. Arithmetic B. Geometric C. Both D. Neither 3. Write a rule for the sequence 1,2,4,8 A. Start with one and then add

asked by Tim on February 28, 2019
61. ## mathematics

the 10th term of an arithmetic sequence is equal to the sum of 40 and 5th term.If the 15th term is 127 what is its common difference?what is its first term?what is the sum of the first 30 terms.

asked by krishna on July 23, 2016
62. ## math

The su吗the sum of the 1st twenty-one of linear sequence is 28, and sum of the first twenty -eight terms is 21.find (a) the term of the sequence that is equal to 0. (b) the sum of the terms preceding the term 0

asked by kunfayakun on December 24, 2017
63. ## arithmetic

The initial term of an arithmetic sequence is 5. The eleventh term is 125. what is the common difference of the arithmetic sequence?

asked by Jane on October 25, 2011
64. ## math

if the sixth term of an arithmetic progression is 37 and sum of the first six term is 147

asked by OLa on April 20, 2017
65. ## arithmetic

determine the secon termof an A.P whose sixth term is 12 and eighth term is 22?

asked by dany on February 9, 2013
66. ## math

The sum of the first 10 term of an arithmetic sequence is 145 and the sum of the fourth and ninth term is five times the third term. Determine the first term and constant difference.

asked by matso on February 1, 2015
67. ## Algebra 2

Determine if the sequence is arithmetic, geometric, or neither. If it is arithmetic or geometric, write a rule. 4,1,0,1,4 My answer: Neither (-2)^2 (-1)^2 0^2 1^2 2^2 Is it correct?

asked by Anonymous on October 26, 2012
68. ## algerbra2

find the eighth term of a sequence whose first three term are 13,6,-1

asked by melinda on November 21, 2011
69. ## Maths

The 3 rd term if an arithmetic sequence is 19 and the 9 term is -5 find a and b

asked by Siddiha on June 15, 2019
70. ## uniuyo

The second and fifth term of a geometric progression are 21 and 567 respectively. Find the first term and the common ratio of the progression

asked by Anonymous on August 17, 2015
71. ## MATHEMATIC DEPARTMENT

The second, third and ninth terms of an arithmetic progression forms the first, second and third terms of a geometric progression. Find the common ratio and hence the eleventh term of geometric progression.

asked by Mr. Bett on April 20, 2015
72. ## 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.

asked by Joe on July 27, 2011
73. ## Math

We're doing sequence things in class how do I find the general term of this set (4,8,6,16,8,32,10,64). The answer must be in an equation. The next in the sequence would be 12, 128. I thought the answer was f(x) = 2x but that doesn't account for 6,8,10

asked by Cara on November 20, 2014
74. ## maths

three number form an arithmetric sequence. Their sum is 24. A)If 'a' is the first number and 'd' the common difference, show that a+d=8 B)If the first number is decreased by 1 and the second number by 2, the three numbers then form a geometric sequence.

asked by Anonymous on February 21, 2010
75. ## maths

if 4x+3and 7x+6are consecutive terms of a geometric sequence, find the values(s)x.

asked by samrawit on October 9, 2018
76. ## math

term given by x+2,3x-1,and 4x-1 form an arithmetic sequence. find the value of x. i didn't get it how to start this question and how it forms arithmetic sequence?

asked by Riana on January 9, 2013
77. ## harmonic progression

find the sequence whose n th term is 1/3n-2. is this sequence an H.P.?

asked by warnar on December 6, 2016
78. ## ALGEBRA

if the 6th term of an arithmetic sequence is 48, and the sum of the first 6 term is 300, what is the first term and the constant difference? Pls help as I have never learn this before,need some example to start with.thank you

asked by JANE on January 3, 2015
79. ## Math

F25= 75,025 and F26= 121,393 where Fn is the nth term in the Fibonacci sequence. Find F27. I do not understand the Fibonacci sequence, could someone help me with my question and explain it to me please.

asked by Punkie on December 6, 2009
80. ## Math

Solve for the 1st term of the arithmetic sequence whose 33rd term is -2p and whose 61st term is 26p.

asked by Annika on June 15, 2014
81. ## Math

For the arithmetic sequence with given first term 4 and common difference 4: its nth term is __________ its 10-th term is ________

asked by George on May 15, 2018
82. ## Math

The first term in a sequence is 4 and each of the following terms is found by multiplying the previous term by n. What is the fifteenth term? Is the answer 4n(15)?

asked by Jessica on November 18, 2015
83. ## Algebra

Find the general term in simplest form for the sequence 2,1,-4,7,-10,13,-16. There's an addition of 3 with alternating signs I think but I'm unable to find a general term.

asked by Emily on November 26, 2017
84. ## Maths

Hi, I am working on some Nth problems - can anyone tell me if this is correct :- Nth term sequence is n + 4 are the first three terms 5,6,7, A nth term is 85 - 5n are the first three terms of the sequence 17, 34, 51, A nth term is 2n - 0.5 are the first

asked by Andy on October 1, 2012
85. ## Math

what is the 15th term of an arithmetic sequence in which the third term is 1985 and the eighth term in 2015?

asked by Samantha Cooper on January 6, 2015
86. ## Math SL

An Arithmetic sequence has a tenth term of 17 and a fourteenth term of 30, ind the general term PLEASE HELP!!!!

asked by Britney OW on September 22, 2012
87. ## maths

IN AN ARITHMETICS SEQUENCE THE SEVENTH TERM IS 12 AND THE 21ST TERM IS 68. CALCULATE THE 68TH TERM.

asked by Lebohang on March 22, 2016
88. ## math

The first three terms of a geometric sequence are as follows. 64, 32, 16 Find the next two terms of this sequence.

asked by Wilson on May 4, 2012
89. ## math

The first three terms of a geometric sequence are as follows. 32 , 16 , 8 Find the next two terms of this sequence.

asked by kiera on May 3, 2017
90. ## Algebra 1

The first term of an arithmetic sequence is 5. The eleventh term is 125. What is the common difference of the arithmetic sequence?

asked by Amari on October 17, 2018
91. ## maths

consider the arithmetic sequence which has the second term equal to 8 and the fifth term equal to 10 2.1.1 determine the common difference of this sequence

asked by ntarbie on February 18, 2016
92. ## Math

Show that each sequence is geometric. Find the common ratio and write out the first four terms. (Can you explain how to do it too?) > {(5/2)^n) > {(3n/9)} > {3^2n}

asked by Avery on January 27, 2013
93. ## Maths

For the geometric sequence t: {3, m, n, 192, . . .}, find the values for m and n.(Answer is m=12, n=48) How can we do this without trial and error? Thanks to anyone who helps.

asked by Fred on October 5, 2018
94. ## Precal

Find all values of x such that x-6, x+6, and 10 x -6 form a geometric sequence. Give your answers in increasing order

asked by Teagan on November 29, 2013
95. ## Math Help

Hi! I need help with these two questions. Thanks! 1.) Look for the first four terms for the following sequence below. an=n(n^2-6) 2.) For this question, remember that your answer has to begin with the second term of the following sequence. Look for the

asked by Tori on April 29, 2015
96. ## Algebra 2

Describe an infinite geometric series with a beginning value of 2 that converges to 10. What are the first four terms of the sequence? a{1} = first term of series                ∞    Infinite Sum = ∑  a{1} •

asked by Ke\$ha on March 31, 2016
97. ## math

Hi I need someone to check my answers I'll show whatever work I have but for time purposes I'll just post my answers because I think I have most of them correct. Thanks! 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7. A)143 B)136

asked by Jon on December 12, 2007
98. ## Geometric Progression.

The fifth of an exponential sequence (GP) is greater than the fourth term by 13.5 and fourth term is greater than the thrid by 9.Find:common ratio and the first term.

asked by AREMU on January 24, 2017
99. ## math

in an arithmetic sequence 17th term is 9 times the first three terms and the 9th term is 6 less than 3 times the 1st term. Find the first three terms

asked by jessica on February 3, 2017
100. ## math

The sum of 5th term and 24th term is 50 Find the sum of first term and 28th term. Also find sum of 28th term of this sequence?

asked by ramla on June 14, 2016