# 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 3
1. ## Algebra1

Determine 5th term in the geometric sequence whose first term id 4 and whose common ratio is 3

asked by Monique on February 27, 2017
2. ## maths

Sorry the full question is: If the third term of a of a geometric sequence is 7, and the 7th term is 16.807, what is the common ratio?

asked by Andrew on January 3, 2015
3. ## 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.

asked by Charmian on September 7, 2008
4. ## Math

Determine whether this sequence is arithmetic or geometric. Find the next three terms. 81, 27, 9, 3, . . . A. arithmetic, 0, –3, –6 B. geometric, 0, –3, –6 C. geometric, 1,1/3 , 1/9 D. The sequence is neither geometric nor arithmetic. Is the answer

asked by Morgan on April 16, 2015
5. ## maths

If 3•5/9 and 40•1/2 are the 1st and last term of geometric sequence. Determine the value of fifth term if there are seven terms.

asked by jay on February 26, 2015
6. ## math

write the first five terms of a geometric sequence whose first term is 100 and whose third term is less than 30

asked by jr on November 29, 2012
7. ## Math

If m th tern of the geometric sequence is 1/n and n th term is 1/m then show that sum of first term s(mn)=1/2 (mn+1).

asked by Rabin on February 26, 2016
8. ## Math

Given the geometric sequence: 19, 17111, 1539121, ⋯ Find an explicit formula for an, where the first term is a1=19. an= Find a6=

asked by Anonymous on April 24, 2016
9. ## Math

Given the geometric sequence: 26, 2617, 26289, ⋯ Find an explicit formula for an, where the first term is a1=26. an= Find a6= please help out

asked by Anonymous on April 27, 2016
10. ## math

what is the sixth term in this sequence 83,77,71,65

asked by isabel on August 19, 2010
11. ## math(need 2nd opinion)

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 A)15 B)15/2 C)-15 D)1/15 I chose A 2)Find the sum of the infinite geometric series. Sigma sign with infinity symbol above and n=1 below. To the right 20(-1/4)n-1 A)25 B)80/3 C16 D)does not exist

asked by Jon on December 12, 2007
12. ## math

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 A)15 B)15/2 C)-15 D)1/15 I chose A 2)Find the sum of the infinite geometric series. Sigma sign with infinity symbol above and n=1 below. To the right 20(-1/4)n-1 A)25 B)80/3 C16 D)does not exist

asked by Jon on December 12, 2007
13. ## Math

4. Which explains why the sequence 81, 3, 1/9,... is arithmetic or geometric? A)The sequence is arithmetic because it decreases by a factor of 1/27 B)The sequence is geometric because it decreases by a factor of 1/27 C)The sequence is arithmetic because it

asked by Jeff the Killer Hates Math on March 31, 2015
14. ## Math

Find the 6th term of the geometric sequence with a4=256/625 and a11=-4194304/48828125

asked by Shelby on November 5, 2009
15. ## Math

can someone please make me create a geometric sequence up to 5 terms? so that I can find the explicit formula for the nth term

asked by Blank on February 24, 2019
16. ## Math

1. Find the common ratio and 9th term of the sequence 6, -3, 3/2, -3/4, ..... 2. Find the 7th term of the sequence: 2, 6, 18, 54, ..... 3. Find the 11th term of the sequence 1, -1/2, 1/4, -1/8, .....

asked by Brianna on October 8, 2014
17. ## 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

asked by jen on October 19, 2007
18. ## maths

The 2nd term in a geometric sequence is -4 and the 5th term is 32

asked by Awe on January 21, 2014
19. ## math

The 3rd term of a geometric progression is nine times the first term.if the second term is one-twenty fourth the 5th term.find the 4th term. solution ar^2=9a r=sqr of 9 r=3.pls help me on how to get the first term(a)

asked by james on November 27, 2014
20. ## confused+ math!

A finite geometric sequence has t1= 0.1024 and t2= 0.256 how many terms does this sequence have if its middle temr has the value 156.25? how would go about and do this question? If t1 = 0.1024 and t2 = 0.256, then the common ratio is t2/t1 = 2.5 The value

asked by Anonymous on October 17, 2006
21. ## Maths

The difference between the first term and the second term in a geometric sequence is 6. The difference between the second term and the third term is 3. Calculate the difference between the third term and the fourth term. Thanks to anyone who helps

asked by Fred on October 6, 2018
22. ## Math

1.The nth term of a geometric sequence is given by a_n=1/4(4)^n-1 . Write the first five terms of this sequence. 2.The nth term of a a geometric sequence is given by a_n=27(0.1)^n-1 . Write the first five terms of this sequence.

asked by Anonymous on November 30, 2015
23. ## math

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 A)15 B)15/2 C)-15 D)1/15 I chose A 5)Find the fifth term of the sequence in which a1=-3,and aN+1=3aN-n A)-301 B)-99 C)-193 D)-341 I don't know

asked by Jon on December 13, 2007
24. ## Math

1. Victor brought a brand new car for 750,000. IF the value of the car depreciates 20% per year, what will it be worth during the fourth year? 2. Given the terms a10 = 3/512 and a15 = 3/16384 of a geometric sequence, find the exact value of the first term

asked by Erin on October 3, 2014
25. ## Math

The sixth term of an appointment is 37 and the sum of the first sixth term is147 find the first term,find the sum of the first fifteen terms.

asked by Gloria on August 24, 2017
26. ## Algebra II

1) write an equation for a circle with the center (2,0) and radius sqrt 11 2) Find the common ratio in the geometric sequence : 7, -28, 112 .... 3) In a recursive formula, each succeeding term is formulated from the next term. a) true b) false 4) find the

asked by Bread on May 18, 2011
27. ## math

1) If the number 1,1/3,1/9, are terms of Geometric progression. Find its common ratio 2) If the second term of Geometric progression is equal to 3, and the 5th term is equal to 81/8. Find the 7th term. 3)If x,y,3 is a Geometric progression. Find the value

asked by bogoss on March 12, 2011
28. ## Precalculus

1. In an arithmetic sequence, the fifth term, u5, is greater than the first term, u1. The difference between these terms is 36. a) find the common difference 9? The tenth term of the sequence is double the seventh term . b) find u1 2.5? 2. Consider the

asked by Anonymous on May 5, 2014
29. ## Maths

The sixth term of GP is 16 and the third term is 2.Find the first term and common ratio. 6th term =16 3rd term=2 So ar^5=16 and ar^2=2, then divide. So r^3=8, and r^3 =2^3. Therefore r =2 and a=1/2

asked by Vin Mwale on December 3, 2015
30. ## Math

hi im really stuck... 3. which explains why the sequence 81,3,1/9....... is arithmric or geometric A. the sequence is arithmic because it decreases by a factor of 1/27 B. the sequence is geometric because it dereases by a factor of 1/27 C. the sequence is

asked by help me please on April 11, 2018
31. ## Maths

The first, third and ninth terms of an arithmetic sequence form the terms of a geometric sequence. Find the common ratio of the geometric sequences. a, a+2d, a+8d a+2d/a = a+8d/a+2d ?

asked by Michael on January 16, 2015
32. ## mathematics

6. In a GP the 3rd term is equal to four times the first term and the sixth term is equal to three times the fourth term plus 32. Determine the sequence.

asked by patricia on May 3, 2016
33. ## Sequence

In a GP the 3rd term is equal to four times the first term and the sixth term is equal to three times the fourth term plus 32. determine the sequence.

asked by KAdila on October 25, 2016
34. ## 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.

asked by hoho on August 4, 2015
35. ## math

The third and seventh terms of an arithmetic sequence are 10 and 20. 1) What is the value of the 1st term? 2) What is the value of the 9th term? 3) What is the equation to find the nth term in the sequence? HELP!! PLEASE!!

asked by Brittany on February 2, 2011
36. ## math

The second and sixth terms of an arithmetic sequence is 2:5 and their sum is 28. Find the sum of the first 10th term.

asked by Hitome Muramasa on August 4, 2016
37. ## My Retyped Algebra Post

1. Use the arithmetic sequence of numbers 2,4,6,8,10.. to find the following: a)What is d, the difference between any consecutive terms? Answer: Show work in this space: b)Using the formula for the nth term of an arithmetic sequence, what is 101st term?

asked by Antonio on April 19, 2007
38. ## 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?

asked by danielle on January 11, 2016
39. ## Math

Determine whether each sequence is arithmetic or geometric. Find the next three terms. -4,8,-16,32... A. Arithmetic, 64,128,256 B. Geometric, -64,128,-256 C. Geometric, -48,64,-80 D. The sequence is neither arithmetic nor geometric sequence. B? Thank you

asked by Morgan on April 16, 2015
40. ## math

the 3rd term of a geometric progression is nine times the 1st term.if the 2nd term is one-twenty fourth the 5th term.find the 4th term.(my solution so far).ar^2=9a r=sqr of 9 r=3.help me find the 1st term

asked by james on November 28, 2014
41. ## 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.

asked by h on September 27, 2014
42. ## Math

The sixth term of an A.P. is 5 times the first term and the eleventh term exceeds twice the fifth term by 3 . Find the 8th term ?

asked by Shivam on May 26, 2015
43. ## maths

in an AP the third term is equal to five times the sixth term. the second term is lesser by 3 than twice the fourth term. find the term of AP

asked by vagdevi on October 17, 2015
44. ## Maths

2,x,y are the first three terms of an arithmetic sequence.If the 2nd term is decreased by 1.The three terms will form a geometric sequence.calculate x and y and my working out is that if i said x-1

asked by Luhle qwabe on June 16, 2015
45. ## Algebra 1

A geometric sequence is defined by the general term t^n = 75(5^n), where n ∈N and n ≥ 1. What is the recursive formula of the sequence? A) t^1 = 75, t^n = 5t^n - 1, where n ∈N and n > 1 B) t^1 = 75, t^n = 75t^n - 1, where n ∈N and n > 1 C) t^1 =

asked by Kira on October 23, 2018
46. ## 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?

asked by jjenng on December 14, 2015
47. ## math

The third term of a geometric progressiom is nine times the first term.if the second term is one-twenty fourth the fifth term.find the fourth term.ar^2=9a. r=sqr of 9 r=3.pls teach me how to get the first term and i can get the 4th term myself

asked by james on November 27, 2014
48. ## 8th grade math!!!!! :)

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 The sequence is neither geometric nor arithmetic. 2. –4, 8,

asked by jessie on April 11, 2013
49. ## Geometric progression

The second term of a geometric progression is 12 more than the first term given that the common the ratio is half of the first term. Find the third term of the Geometric progression

asked by Anonymous on October 23, 2011
50. ## math

each of the points on the two graphs are of the form (n, tn), where tn is either a geometric or arithmetic sequence. identify the graph that presents a geometric sequence. justify your answers. then determine S8 of the geometric sequence graph A points:

asked by nicole on January 18, 2011
51. ## 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

asked by Ruby on September 9, 2014
52. ## arithmetic

first term and larst term of a geometric progression is 42.if the forth term is greater than the second term by 168, find the first term.the forth term.

asked by charles on September 17, 2011
53. ## 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?

asked by Lily on March 13, 2015
54. ## Math

What is the ninth term of the following geometric sequence? a4=27 a7=64 a9=

asked by Betty on April 21, 2015
55. ## algebra 2

What is the 16th term in the following geometric sequence? 5, –10, 20, –40, 80, ...

asked by jenny on May 21, 2012
56. ## Math 12

In a geometric series S4 = 64 and r = -2/3. The first term in the sequence is? Thanks for your help!

asked by cyn on January 7, 2010
57. ## Math ( Can You check my Work?)

1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an = (2/3)^n 5. an = (-1)^n(n + 5) 6. an = (-1)^n + 1(n + 6) 7. an= n+3/2n-1 8. a1 = -5 and an = an-1 - 3 for n ≥ 2 9. a1 = -6 and an = -2an-1 for n ≥ 2 10.a1 = 4 and an = 3an-1 + 2 for n ≥ 2 11. Find a8

asked by Tony on August 1, 2012
58. ## 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!

asked by Matthew on May 12, 2012
59. ## math

The sum of second term and fourth term of G.P is 30 and difference between sixth term and second term is 90,how to find third term

asked by suma on August 3, 2013
60. ## algebra

solve the system by substitution x+y=9000 .06x+.15y=1215 .06x+.15(x-9000)=1215 .06x+.15x-1350=1215 .21x-1350=1215 x-1350+1214.79 x+2564.79 don't look right? where did I go wrong

asked by john on September 27, 2015
61. ## Math

The first prize in a lottery is \$250 000. Each winner chosen after the first is paid 20% as much as the winner before them. a) Determine t1 and r for the geometric sequence that represents this situation. b) Determine an explicit formula for the general

asked by Alex on September 17, 2014
62. ## Advance function

given that sinx, tanx, and sin2x form geometric sequence, show cos^3x=1/2 can someone explain this to me, i have no idea how to solve it. i really done understand how to turn it into a geometric sequence

asked by AA on November 5, 2016
63. ## Mathematics

If the sixth term of an A.P is 37 and the sum of the first sixth term is 147.find the first term and the sum of the first 15 terms

asked by Olajumoke on October 15, 2018
64. ## MATH

IF the first term in a geometric sequence is 0 and no other terms are given what is pattern?

asked by SHERYL on March 31, 2011
65. ## math

what is the 7th term of the geometric sequence 10,2.2/5,2/25 (solve here)

asked by eljone on August 16, 2016
66. ## Algebra

The first two terms of a geometric sequence are a1=1/3 and a2=1/6. What is a8, the eighth term?

asked by michael on March 22, 2008
67. ## math algebra

what is the 7th term of the geometric sequence 10,2.2/5,2/25 (solve here)

asked by eljone on August 16, 2016
68. ## mathematics

The first three term 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 mapule on February 15, 2015
69. ## geometric series

what is the nth term equation for a geometric sequence with a1 = 36 and r = 1/3

asked by raven on September 13, 2010
70. ## maths and science

The first term of a geometric sequence is 125÷4,the last term is 2, and the sum of the associated series is 203÷4. What is the common ratio and how many terms are there in the series?

asked by nitchelence on January 20, 2016
71. ## mathematics

1.1 the third term of an arithmetic sequence is 8 and the 15 term is 44 . Calculate: 1.1 the common difference and first term. 1.2 the sum of the first 50 terms. 1.2 1;4;7;10.... Is an arithmetic sequence .find: 1.2.1 the 30 term.

asked by tankiso on May 19, 2015
72. ## MATH HELP

Match the sequence (term) with the correct type of sequence (definition). Match Term Definition 128, 32, 8, 2, ... A) Geometric, common ratio is 0.25 1, 3, 9, 27, ... B) Arithmetic, common difference is 5 5, 10, 15, 20, ... C) Geometric, common ratio is 3

asked by Oscar on September 9, 2015
73. ## pre-calculus urgent

The first term of an arithmetic sequence is 6, and the tenth term is 2. (a) Find the common difference d. d = Find the 100th term of the sequence. a100 = (b) Find the partial sum of the first ten terms. S10 = how do i do this, there's an example I tried

asked by Alex on August 15, 2015
74. ## Math

Determine whether each sequence is arithmetic of geometric. Find the next three terms. 14,19,24,29.... A. Geometric,34,39,44 B. Arithmetic,32,36,41 C. Arithmetic, 34,39,44 D. This sequence is neither arithmetic or geometric. Is the answer C? Thank you

asked by Morgan on April 16, 2015
75. ## maths

The first term of a geometric sequence is 31(1/4),the last term is 2 and the sum of the associated series is 50(3/4).what is the common ratio and how many terms are there in the series?

asked by lily on January 25, 2017
76. ## Calculus

Write a formuls for the general term(nth term) of the arithmetic sequence. Do not use a recursion formula. Then use the formula for A to the n to find the indicated term of the sequence find a11: 12, 10, 8,...

asked by Kelly on December 9, 2007
77. ## Geometric Series (Algebra 2)

I need some assistance or a formula when trying to find the first term of geometric series please! I don't understand this!!!! What is the first term of a geometric series with a summation of 289, 5 terms and a common ratio of 1/2?

asked by Greg on April 14, 2012
78. ## Mathematics. Geometric sequences.

2+4+8+...is a geometric sequence. Prove the sum of the first n terms is two less than the (n+1)the term.

asked by Olivia on March 10, 2013
79. ## math

what is the 7th term of the geometric sequence 10,2.2/5,2/25 (show your solution)

asked by eljone on August 16, 2016
80. ## Math

What is the 11th term of the following geometric sequence? Enter a whole number 7/9,-7/3,7,-21,63

asked by Liz on August 1, 2015
81. ## mathematics

If 3/5/9 and 40/1/2 are the first and the last terms respectively, of a geometric sequence, determine the values of the fifth term if there are seven terms in the sequence

asked by mapule on February 15, 2015
82. ## math

Each term in a sequence of numbers, except for the 1st term, is 2 less than the square root of the previous term.If the 3rd term of this sequence is 1, what is the first term?

asked by peter on July 17, 2014
83. ## 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

asked by lee on February 3, 2013
84. ## Pre-Calc/Trig...

If An is defined as a geometric sequence, is the sequence 1/an also a geometric sequence? Explain your reasoning

asked by Anonymous on December 3, 2014
85. ## Precalculus

The 8th term in an arithmetic sequence is 5, and the sum of the first 10 terms is 20. Find the common difference and the first term of the sequence. Alright so in an arithmetic squence the difference d between any two successive numbers is constant. So if

asked by Trudy on January 20, 2007
86. ## Math

Tell whether the sequence 1/3,0,1,-2 is arithmetic, geometric, or neither. Find the next three terms of the sequence.  A.neither;7,-20,61  B.geometric;7,-20,61  C.arithmetic;1/3,1 1/3,3  D.geometric;-3 1/3, 5 5/9,9 7/27

asked by jennifer on August 27, 2016
87. ## math!

george entered a function into his calculator andfound the following partail sums s1=0.0016 s2= 0.0096 s3= 0.0496 s4= 0.2496 s5= 1.2496 determine the genral term of the corresponding sequence how would I approach this question? If this is a series then sn

asked by kassandra on October 18, 2006
88. ## 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

asked by Carol on June 4, 2013
89. ## 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

asked by Brianna on October 17, 2014
90. ## further maths

find the sum of the first eight term of a linear sequence whose first term is 6 and whose last term is 46 the sum of the first ten term of a linear sequence is 60 and the sum of the first fifteen term is 165 find the 18 term of the sequence

asked by victory on March 11, 2017
91. ## 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

asked by edwin on May 21, 2014
92. ## Math/Algebra

If the first term of a finite geometric sequence is .4 and its ratio is .3 what is the sum of the first 5 terms?

asked by Libby on October 29, 2012
93. ## algebra 2

what is the 6th term of the geometric sequence 2000, 800, 320,..../

asked by Lea on February 20, 2013
94. ## Math - Geometric

In a geometric seq. Where the first three terms are 9, -6 and 4 which term of the sequence is 256/729 ?

asked by Ria on August 17, 2016
95. ## Maths

if the third term of a geometric sequence is 7, what is the common ratio? would appreciate if u can show me the working. Thank you

asked by Andrew on January 3, 2015
96. ## Algebra

What the general term a_n for the geometric sequence a_1= -5 and a_2= 15

asked by Liz on September 2, 2012
97. ## Math

Determine whether each general term defines a geometric sequence. Explain. a) f(n)= 2/(3n+1) b) f(n)= 11/(13^n)

asked by Emily on December 7, 2010
98. ## Math

U3 L10 Connections 7th grade 4. What explains why the sequence 216, 12, 2/3, ... is arithmetic or geometric. A. The sequence is geometric because it decreases by a factor of 6 B. The sequence is arithmetic because it decreases by a factor of 6 C. The

asked by Awsomeness on May 2, 2019
99. ## Arithmetic Sequence

Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.

asked by Nina on September 30, 2012
100. ## Math

The fourth term of an arithmetic sequence is less than the fifth term by 3. The seventh term is three times the fifth term. Find the common difference and the first term

asked by Wawa on December 17, 2017