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 10
1. Alg 2

What is the sum of a 12-term arithmetic sequence where the last term is 13 and the common difference is -10?

asked by Schuyler on June 20, 2011
2. Math

If m th term of the geometric series is 1/n and n th term is 1/m then show that sum of first (mn) th term of this series is 1/2 (mn+1).

asked by Rabin on February 26, 2016
3. help

the first term of an original sequence is 3,6,9,12,15,... Find the first six terms in each of the following case: 2.The sum of the first two terms of the original sequence is 7

asked by Anonymous on February 7, 2014
4. maths

In the sequence: x+4y ; 2y+2 ;x ;y-1, (consisting of 4 terms) the first three terms form an arithmetric progression, while the last three tern form a geometric sequence. Calculate the values of x and y. Answer(s) can be left in surd form.

asked by Anonymous on February 21, 2010
5. math

the ? says "find the 10th term of the sequence" 5n+3 Would I do 5(10) +3 and get 53 as the answer? Am I doing this correctly? Thank you for your help.

asked by RJ on January 5, 2009
6. Math

Find the 100th term in the sequence 77, 71, 65, 59 How do you go about doing this question without the need to list them all out?

asked by Maria on May 30, 2015
7. Algebra

Given the explicit formula, find the 15th term of the sequence: a(n) = -4n + 1

asked by Blake on March 27, 2016
8. maths

The first and the last term of an AP are 6.7 and 17.1 respectively. If there are 14 terms in the sequence find the common difference

asked by tiolu on October 23, 2018
9. Algebra

Find the general term for the sequence whose first five terms are shown. e^3,e^4,e^5,e^6,e^7,...

asked by Anonymous on December 6, 2017
10. Geometry progression

Given that 6,9,13 1/2,20 1/4 form a sequence of numbers, find the sum of it 13 term

11. Math

Find a general term a Subscript n for the​ sequence, whose first four terms are given. 4,6,8,10

asked by Minnie on August 1, 2019
12. math

How to write a rule for the sequence. Them, find the unknown term. 3/10,2/5--------,3/5,7/10

asked by blujag on January 26, 2016
13. arithmetic sequence

find the 9th term of the arithmetic sequence with Asub1=10 and =1/2

asked by alex on July 6, 2016
14. Math

Find the eighth term of the sequence 5, -15, 45, -135 ... I got -10,935

asked by Narancia Ghirga on June 13, 2019
15. math

Find the number of term s in the following arithmetic sequence. 3, 9, 15, 21... 123

asked by Anonymous on April 19, 2014
16. Algebra

The following problem refers to a geometric sequence: If a_1=-2 and r=-1.Find s_28. This the formula was given by my instructor: S_n=a_1(1-r^n)/1-r =-2(1-(-1)^28)/1-(-1) =-2*2/2 =-4/2 =-2 where did I go wrong? Can You help me correct it please. Help me

asked by Keonn'a on September 28, 2018
17. math studies

An arithmetic series has a first term of -4 and a common difference of 1. A geometric series has a first term of 8 and a common ratio of 0.5. After how many terms does the sum of the arithmetic series exceed the sum of the geometric series?

asked by ll on September 28, 2008
18. Algebra

Use the arithmetic sequence nth term formula to solve the following problem: The first, second, and the nth terms of an arithmetic sequence are 2, 6, and 58 respectively: find the value of n and For that value of n, what is the exact value of the sum of n

19. 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

asked by Ann on May 3, 2008
20. Math

Calculate S(17) for the geometric series 256 - 128 + 64 - 32 + ... using the finite geometric sum formula. Round your answer to three decimal places. 170.668 0.004 511.996 168,151.254 Find a(5) for the geometric sequence in which S(6) = 63 and the common

asked by Max on January 9, 2018
21. math

What is a spoken sequence? I was in math class and one of the examples was: 29787, 13, 2, 1, 1, 1, ... What does this mean? I learned that I never have to find the general term, but how do I find the next?

asked by jeremy on May 16, 2019
22. pre cal 11

i am stuck at a question that is asking for the common difference, first term, and general term for the arithmetic sequence the question is t10=50 and t27=152 i found my d=6 and t1=(-4) so know my equation is: tn=(-4)+(n-1)6 i had asken my teacher to tell

asked by jessica on February 13, 2015
23. Algebra

Which statement describes how to find the nth term in the sequence? 15, 32, 49, 66, 83, ... A. subtract 2 from 17 times the term number B. add 2 times the term number and 15 C. add 2 and 17 times the term number D. subtract 17 times the term number from 15

asked by Elysa on March 21, 2012
24. geomatry

write the first 5 term in the sequence that represent this situation. each term should indicate the total number of students that can sit around one, two, three, four, and five tables. explain your reasoning.

asked by annoymose on November 29, 2012
25. Math

Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3.

asked by Annika on June 17, 2014
26. Math

the nth term of a sequence is 3(n+5) which is the first term to be larger than 100?

asked by Dk on April 22, 2019
27. algebra

determine whether 447 is a term of each sequence(s) If so, whitch term is it ? A.t(n)=5n-3 B.t(n)=24-5 C.t(n)=-6+3(n-1) D.t(n)=14-3n E.t(n)= -8-7(n-1)

asked by KAESHAA on January 12, 2015
28. pre calc

What is the fifth term of the sequence {2n - 1 / n}? a)4, b)14/5 c)7/4 d)9/5 assuming the first term is 1, and there is no good reason it should be, then 1,3/2, 5/3, 7/4, ...

asked by raven 31791 on March 8, 2007
29. 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

asked by Rom on March 8, 2007
30. maths

if the 4th term of an arithmetic sequence is 9 and the 8th term is 19

asked by himanshi on November 3, 2015
31. Math 126

State whether the following sequence is arithmetic,geometric,or neither. 0,1,4,9,16,25,36,...

asked by Billie on August 4, 2012
32. math

identify the sequence 1.6, .8, .4, .2 as arithmetic, geometric, or neither and why.

asked by steve on April 13, 2014
33. Math

Detemine the sequence as arithmetic, geometric, both or neither. 16,8,4,2,...

asked by Jack on November 29, 2017
34. algebra math

Which one of the following is a geometric sequence? A. 2, –3, 9⁄2, −18⁄4 B. 0,1,2,3,... C. 8,4,2,1,1⁄2,1⁄4,... D. –7,10,23,36,.. i think the answer is D Can please check it ?

asked by Jessica on October 28, 2014
35. MATH HELP ASAP

identify the sequence as arithmetic, geometric, or neither 3, 4.5,6,7.5,...

asked by Anon on May 3, 2016
36. Math

What type of sequence is this? 2 , 3, 5, 8, 12 Arithmetic, geometric or neither

asked by Help! on March 15, 2016
37. math

Which of these is not a geometric sequence? 3, 6, 12, 24, ... 250, 50, 10, 2, .... 5, 15, 45, 135, ... 4, 12, 20, 28, ...

asked by Anonymous on May 24, 2011
38. math30

Write the first three terms of the following geometric sequence: tn = 3(1/2)n-1.

asked by alejandro on September 10, 2012
39. math

Question 7 The first three terms of a geometric sequence are as follows. 10,30,90

asked by shriek on November 14, 2017
40. algebra

identify the sequence as arithmetic geometric or neither 3 4.5 6 7.5

asked by Erica McDonnell on March 23, 2018
41. Algebra

first five terms in the geometric sequence an =(2)^n-1 starting with n^1

asked by Linda on June 13, 2015
42. math

identify the sequence as arithmetic, geometric, or neither 3, 4.5,6,7.5

asked by Erica McDonnell on March 23, 2018
43. arithmetic

State whether the following sequence is arithmetic, geometric, or neither. 0, 1, 4, 9, 16, 25, 36, ....

asked by Anonymous on February 27, 2011
44. Math

Identify the sequence as arithmetic, geometric, both, or neither 1.7,9,11,13

asked by Bob on February 28, 2019
45. Math 126

State whether the following sequence is arithmetic, geometric, or neither. 4, 15, 26, 37, 48, 59, .....

asked by Del on March 7, 2011
46. math

How do you figure the next geometric sequence of 90,18,3.6,073

asked by keke on February 27, 2012
47. Algebra

Find the general term for the sequence whose first five terms are shown. −1/8,1/27,−1/64,1/25,−1/216,...

asked by Anonymous on December 6, 2017
48. Algebra 2

Will someone please check if I am right???? find the second and third term of the arithmetic sequence -7, __,__,-22,-27... Options: -12,-15*** My Answer -17,-12 -10,-17 -12,-17

asked by Ke\$ha on March 31, 2016
49. geometric sequence

how whould u find the next 3 terms of sequence 18,9,9/2,9/4 Each term is the last multiplied by 1/2. dont got one i think that is right

asked by ebony on March 6, 2007
50. mathematics

Find showing all the work,the formula for the nth term of sequence 2,5,10,17,26

asked by Mwalimu on January 13, 2017
51. Algebra 2

Write a recursive formula for the sequence 15, 26, 48, 92, 180, ... Then find the next term.

asked by Mimi on May 17, 2012
52. maths

the sum of an arithmetic progression is given by 2n-1. find the nth term of the sequence

asked by Docia on November 9, 2015
53. Math

Which explains why the sequence 81,3,1/9,... is arithmetic or geometric? I think it's geometric, but I not sure why It either because: It decreases by 3 or It decreases by 1/27. I think it could be because it decreases 1/27.

asked by Party girl on March 20, 2019
54. Math

Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need to show the work on both problems thank you. Perform the indicated operations

asked by John on August 7, 2011
55. Sequence and series

Do you know the difference between a sequence and a series? Graph the terms of an arithmetic series. Remember the domain is the set of natural numbers, not the set of real numbers. What type function do you see? Graph the terms of a geometric series.

asked by Tony on April 21, 2007
56. Algebra

The following problem refers to an arithmetic sequence. If a_5=9 and a_14=18. Find the term a_1, the common difference and then find a_24.

asked by Keonn'a on September 25, 2018
57. Algebra

The following problem refers to an arithmetic sequence. If a_5=9 and a_14=18. Find the term a_1, the common difference and then find a_24.

asked by Keonn'a on September 25, 2018
58. Precalculus

Suppose you deposit \$10,000 into an account earning 3.5% interest compounded quarterly. After n quarters the balance in the account is given by the formula: a) Each quarter can be viewed as a term of a sequence. List the first 5 terms. b) Identify the type

asked by bob on February 6, 2018
59. arithmetic

I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) but i don't know how

asked by Gemini on October 19, 2009
60. Geometric series

The sum of the first n terms of the geometric sequence -1, -3, -9,... is -3280. Find the value of n. Express answer in simplest fractional form. 1. t1= -1 2. r = 3 3. S6 = I got -364 but it's not the right answer 4. n = I keep getting a decimal number:

asked by Emily J on May 8, 2016
61. Maths

The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

asked by Anonymous on December 5, 2016
62. Maths

The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

asked by Anonymous on December 6, 2016
63. Maths

The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

asked by Anonymous on December 5, 2016
64. Algebra 2

Is this sequence arithmetic,geometric, or neither? -111,2.5,115.5

asked by Nan on August 7, 2014
65. Algebra

Write the explicit formula for the geometric sequence. 4​, 3​, 2 1/4, 1 11/16, . . .

asked by Kydanty on July 22, 2019
66. precal

what is the 7th geometric sequence when a10 is 9 and a13 is -72

asked by gail on September 30, 2014
67. maths

the first three terms of a geometric sequence are: t1; t2 and t3. if t2=t1-4 and t3=t2-9. determine the values of t1; t2 an t3

asked by anonymous on February 16, 2014
68. math

State whether the following sequence is arithmetic, geometric, or neither. 0, 1, 4, 9, 16, 25, 36, .... (Points : 1)

asked by Anonymous on April 29, 2011
69. math

what is the common ratio in the geometric sequence: 8, 15, 225/8

asked by Anonymous on October 9, 2018
70. Mathematics

The first three terms of a geometric sequence are: T1; T2; and T3. If T2 = T1 + 4 and T3 = T2 + 9, determine the values of T1; T2 and T3

asked by Anon on January 30, 2016
71. math

Tell whether the sequence is geometric. Explain why or why not. 1. 4, 16, 64, 256, 1024,... 2. -1/4, 3/8, -3/16, 1/32, -3/64, ... 3. 0.75, 1.5, 2.25, 3, 3.75, ...

asked by Neil on May 23, 2012
72. math

Select the first five terms in the geometric sequence an= (2)^n-1, starting with ^n=1

asked by Anonymous on April 13, 2013
73. Math

4. Identify the sequence 1,024, 64, 4, 1/4,... as arithmetic, geometric, neither, or both,

asked by ScoMiche on March 7, 2017
74. math

The first three terms of a geometric sequence are: T1; T2; and T3. If T2=T1-4 and T3=T2+9, determine the values of T1; T2 and T3.

asked by mamokgate on February 20, 2016
75. maths

Three terms of geometric sequence: T1,T2 and T3. If T2=T1+4 and T3=T2+9 determine the values of T1,T2 and T3.

asked by jay on February 26, 2015
76. algebra 2

what is the rule for the geometric sequence: 5000, 500, 50, 5?

asked by sky on April 30, 2011
77. algebra

Select the first five terms in the geometric sequence an=(3)n−1, starting with n=1

asked by jim on April 23, 2016
78. Algebra

Formulate the recursive formula for the following geometric sequence. {-16, 4, -1, ...}

asked by Britney on October 23, 2017
79. math

the fourth term of an arithmetic progression is equal to 3 times the first term and the seventh term exceeds twice the third term by 1 find the first term and the common differrence

asked by kruthi on February 7, 2014
80. math

if 4th term of an arithmetic progression is 3 times the 1st term nd 7th term exceeds twice the third term by 1. find the first term and common difference

asked by anandita on April 20, 2015
81. geometric progression

the 3rd term of a gpis 10 and the 6th term is 80 find the common ratio No2 if the 2nd term of a gp is 4 and the 5th term is 1over 16,the7th term is_

asked by jessica on November 18, 2014
82. Sequences and Series

use the iterative rule to find the eighth term in the sequence an = 25 − 3n. 176 49

asked by Sara on October 1, 2015
83. maths sequence

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

asked by Anonymous on October 20, 2016
84. arithmetic

Write a rule for the nth term of the arithmatic sequence. Then find a10. 1. -4,2,8,14,20 2. -25,-29,-30,-37,-41

asked by Dariean on April 26, 2011
85. arithmetic

Write and solve an expression to find the nth term of each arithmetic sequence... 3,7,11,15 n=8

asked by Olyvea on May 17, 2011
86. math

The 6th term of an arithmetic sequence is x while the 11th is y find the 1st 2 terms

asked by unknown on January 20, 2013
87. Trig

Find the 6th term of the arithmetic sequence with a9=120 and a14=195

asked by Kiki on April 29, 2014
88. Math (Algebra/Pre-Algebra)

What is the 23rd term in the arithmetic sequence: 11, 14, 17, 20...? All I need is the formula to find the it because I have to show work. Thanks.

asked by Samantha on June 4, 2009
89. maths

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

asked by linear sequence on January 21, 2016
90. math

Find the sum of the first 60 terms of the arithmetic sequence whose first term is −15 and whose common difference is 7.

asked by gisela on September 27, 2014
91. math

How do you find the nth term in a sequence of numbers if the values are increasing then decreasing? Ex. 1: -2, 3: 10, 5: -18

asked by Shay on July 27, 2011
92. algebra 2

find the sum of the first 24 terms of the arithmetic sequence, if the first term is 3 and the commom difference is 3.

asked by Anonymous on May 25, 2010
93. sequence....help!!!!!

find an expression in terms n of the nth term of the following sequence 5,13,32,69,129,221......help

asked by emmanuel on March 15, 2016
94. maths

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

asked by linear sequence on January 13, 2016
95. math1

find the 50th term of a sequence 11,15,19,23... a.203 b.204 c.207 d.211

asked by brittian on April 27, 2010
96. MATH

A G.PIS SUCH THAT THE 3RD TERM IS 9TIMES THE FIRST TERM,WHILE THE 2ND TERM IS ONE TWENTY FOURTH OF THE 5TH TERM.FIND ITS 4TH TERM

asked by JOSHUA on April 8, 2019
97. Math

Look for a pattern and find the next two numbers in the sequence and then write a general version of the nth term. 1 2 3 4 5 6 7 8 n 18 30 42 54 66 78 I can recognize the pattern as being + 12 so under 7 my answer would be 90 and under 8 my answer would be

asked by Sam on March 9, 2016
98. Math

Look for a pattern and find the next two numbers in the sequence and then write a general version of the nth term. 1 2 3 4 5 6 7 8 n 18 30 42 54 66 78 I can recognize the pattern as being + 12 so under 7 my answer would be 90 and under 8 my answer would be

asked by Sam on March 9, 2016
99. 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

asked by MS SUE OR ANYBODY PLZ HELP URGENT!!!:( on January 29, 2015
100. Precalculus

Suppose you deposit \$10,000 into an account earning 3.5% interest compounded quarterly. After n quarters the balance in the account is given by the formula: 10000(1+0.035/4)^n a) Each quarter can be viewed as a term of a sequence. List the first 5 terms.

asked by bob on February 6, 2018