# if the 7th term of an a.p is twice the third term and the sum of the first four terms is-16 and the last and the last term is 72, find the number of the terms

13,979 results
1. ## Maths

The 3rd term of an AP is 10 more than the first term while the fifth term is 15 more than the second term.find the sum of the 8th and 15 term of AP.if the 7th term is seven times the first term.

asked by Magana on February 15, 2012
2. ## Math

The 3rd and 9th term of a g.p are 54 and 39,336 respectively.find the 6th term,sum of 4th term,sum of 4th and 7th term and product of 2nd and 5th term

asked by daniel on October 30, 2018
3. ## math

If the sum of the 4th term and the 7th term is 45.The sum of the 9th term is 117.Find the term when the sum of it is 600

asked by thembeka on February 16, 2017
4. ## arithmetic

in an arithmetic progression the 13th term is 27 and the 7th term is three times the second term find;the common difference,the first term and the sum of the first ten terms

asked by gaya on March 8, 2016
5. ## arithmetic

Determining the first three terms of an ArithmetiC progressionof which the (a.)10th term is 31 and the 15th term is 49 (b.)7th term is 3 and 12th term is -3 (c.)5th term is 8 and the 11th term is -28 (d.)9th term is7+9x and d=2x,Show all calculations

asked by Thandi Mstletoe on January 27, 2015
6. ## math

The 3rd term of an Arithmetic Progression is 10 more than the first term while the fifth term is 15 more than the second term. Find the sum of the 8th and 15th terms of the Arithmetic Progression if the 7th term is seven times the first term.

asked by Toba on May 8, 2016
7. ## maths

The sum of the 3rd and 7th term of an A.P is 38 and the 9th term is 37..Find the first term and common difference

asked by benita on October 21, 2014
8. ## maths

The 4th term of an ap is 15 while the 7th term is 27, find the sum of the 9th and 10th term.

asked by thelma on November 23, 2014
9. ## arthmetic

in an arthmetic progression or series,the 13th term is 27 and the 7th iterm is 3 times the 2nd term ,find first term the common difference the sum of rhe squence

asked by Anonymous on October 12, 2011
10. ## 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
11. ## Math

The 16th term of an AP is three times the 5th term. If the 12th term is 20 more than the 7th term, find the first term and the common difference.

asked by Hamna on February 19, 2018
12. ## Arithmatic Progression

The sum of the first 5 terms of an AP is 40 and the 7th term is equal to 4 times the second term, find the first term (a), common difference (d) and the sum of the second five terms.

asked by Achire on July 20, 2017
13. ## math

The 8th term of ap is 5time the 3rd term, while the 7th term is greater than the 4th term, write the first 5 term of the ap

asked by wale on March 30, 2012
14. ## Math

Name School Team Event 3: Logic and Reasoning (with calculators) 5th/6th grade Math Meet ‘08 For each number pattern, fill in the next five terms. (2 pts. each blank) ANSWER KEY 1st term 2nd term 3rd term 4th term 5th term 6th term 7th term 8th term 9th

asked by Anonymous on March 30, 2012
15. ## Mathematics

If the sum of 3th and 8th terms of an A.p is 7 and the sum of 7th and 14th term is -3,find the 10th term .

asked by Anonymous on September 1, 2017
16. ## math

how would i find the sum of the 7 term. if i have 1st term = 11 and 7th term = 704.its a geometric series. i don't know how to find the difference?

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

The Ratio Of The 2nd Term To The 7th Term Of An A.P Is 1:3 And Their Sum Is 20.Calculate The Sum Of The 1st Terms Of The G.P

asked by Maths on April 25, 2016
18. ## Math

Am I doing this correctly Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 75 and the 8th term is 48. A) 60*** B) 66 C) 57 D) 51.5 E) 59 F) 68 r^2 = 48/75 = 16/25 r = 4/5 7th term = 75 * 4/5 = 60

asked by M, S, E, on May 11, 2017
19. ## arithmetic

The 8th term of an A P is 5times the third term while the 7th term is 9 greater than the 4th term.what are the first five term

asked by Anonymous on November 4, 2011
20. ## math

The third,fourth and eight term of A.P form first three consecutive term of G.P.if the sum of the first ten term of A.P is 85.calculate the first term of both A.P and G.P,common ratio and sum of 5 term of G.P

asked by zaituni on June 19, 2017
21. ## math

The third,fourth and eight term of A.P form first three consecutive term of G.P.if the sum of the first ten term of A.P is 85.calculate the first term of both A.P and G.P,common ratio and sum of 5 term of G.P

asked by zaituni on June 19, 2017
22. ## 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
23. ## maths

Given the G.P 05,0.005,0.0005.find the 7th term, find the sum of the 1st 7th term

asked by michael on January 25, 2012
24. ## maths

find the sum to 20 terms of an A.P. whose 4th term is 7 and 7th term is 13

asked by sandhya on January 31, 2017
25. ## mathenatic

The sum of sixth term of a.p is 72 and the second term is seven times fifth term find the first term,common difference and the sum of tenth term

asked by morice on June 27, 2016
26. ## maths

The sum of the first two terms of a gp is 28, but the sum of the 3rd and 4th terms is 252. find the 2nd term of the GP if the 7th term is 5103.

asked by agm on June 14, 2017
27. ## Math

The first term of GP is - 3 and square of second term is equal to the 4th term.Find 7th term

asked by Richa Singh on September 11, 2018
28. ## math

The third term of a Gp is 54 & 7th term is reciprocal of 3rd term find the 5th term

asked by neetu on May 14, 2017
29. ## math

The 2nd and 5th term of G.P are 2/3 and 1/2 respectively.what is the 1st term,the 4th term and the 7th term

asked by hauwa on October 26, 2017
30. ## math

if the 7th term of an a.p is twice the third term and the sum of the first four terms is-16 and the last and the last term is 72, find the number of the terms

asked by akorede on January 10, 2019
31. ## 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
32. ## Maths

If the 7th term of an AP is twice the third term and the sum of the first four terms is 42

asked by Eny on April 4, 2014
33. ## 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
34. ## maths

Given that the first term of an A.P is 7 and its 10th term is twice its second calculate a)19th term b) sum of 28 term c) different between the 9th and 6th term

asked by kemi on February 4, 2014
35. ## Arithmetic progession

The third term of an A.P is 10times more than the second term. Find the sum of the eight and fifteen term of the A.P if the seventh term is seven times the first term

asked by Abraham on August 13, 2015
36. ## Geomatic Sequence

In a geomatic sequence, the 7th term exceeds the 5th term by 48. Find the first term if the common ratio is 2.

asked by Fara on October 1, 2012
37. ## maths

The 8th term of an ap is 5times the 3rd while the 7th term is 9 greater than the 4th term.write the first 5 terms.

asked by agm on June 14, 2017
38. ## math

calculate the first ten term of an Arithmetic progression whose 5th term is 24 and the difference the 7th and 10th term is 15

asked by Lazarus on March 22, 2017
39. ## core mathematics

The first term of an AP is-8. The ratio of the 7th term to the 9th term is 5:8. Calculate the common difference of the progression.

asked by Anonymous on October 22, 2017
40. ## Math *URGENT

Please give the answers and solutions for each. 1.If the second term is 2 and the seventh term of a geometric sequence is 64, find the 12th term. 2. Which term if the geometric sequence 18,54,162,486,... is 3,188,646? 3. Determine the geometric mean of 8

asked by Aliza on December 20, 2012
41. ## Math

3,5,-5... The first term in the sequence of #'s shown above is 3. Each even # term is 2 more than the previous term and each odd # term, after the first, is -1 times the previous term. For example, the second term is 3+2, and the third term is (-1)x5. What

asked by Mack on May 20, 2007
42. ## math

The first term of an AP is 8. The ratio of d 11th term to the 7th term is 5:8 calculate the common difference

asked by victor on March 19, 2014
43. ## Geometric progression

The 7th term of a g.p. is 8 times of the 4th term. find the series if its 5th term is 48.

asked by Vijay on October 12, 2016
44. ## 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
45. ## Math:A.P.

The 1st,3rd and 9th terms of an A.P are the three terms of a G.P.if the 7th term of the A.P is 19.calculate the 20th term of the A.P and the sum of the first 12terms of the G.P(LEAVING YOUR ANSWER IN INDEX FORM)

asked by Miracle on February 6, 2014
46. ## mathematics

THE 1ST, 3RD AND 9TH TERM OF A LINEAR SEQUENCE A.P ARE THE 1ST THREE TIMES OF G.P. IF THE 7TH TERM OF THE LINEAR SEQUENCE IS 14. CALCULATE (A) 20TH TERM OF THE LINEAR SEQUENCE (B) SUM OF THE 1ST, 12TH TERM OF THE G.P

asked by AYOMIDEY on March 5, 2015
47. ## 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
48. ## algebra

If an A.p. Fifth term exceeds twice second term by 1. The tenth term xeceeds twice fourth term by 3 * find first term and common difference * find sum of first twenty-five terms.

asked by Anwar on October 24, 2016
49. ## Advanced algebra

Find the 7th term of geometric progression if the second term is 75, the 5th term,3/5.

asked by James on December 13, 2015
50. ## Math/Precal

what is the first term of an arithmetic sequence if the 7th term is 21 and the 10th term is 126

asked by Nancy on February 13, 2010
51. ## maths

the sum of first 8 terms of an arithmetic progression is 156.the ratio of its 12th term to its 68th term is 1:5.calculate the first term and the fifteenth term. please help this questions please.

asked by simranpreet on December 3, 2012
52. ## maths

The thirteenth term of an arithmetic progrssion os 27 and the seventh term is three timees the second term. tind the first term,common difference and the sum of the first ten terms

asked by De-Graft on November 6, 2010
53. ## maths

The thirteenth term of an arithmetic progrssion os 27 and the seventh term is three timees the second term. tind the first term,common difference and the sum of the first ten terms

asked by De-Graft on November 6, 2010
54. ## Core mathematics

The 4th term of an A.P.is 37 and the 6th term is 12 more than the 4th term.find the 1st and the 7th term of the sequence.

asked by Sequence and series on November 26, 2011
55. ## algbebra

The fifth term of an A.p. Exceeds the second term by 1.The tenth term exceeds twice the fourth term by 3 * find first term and common difference * sum of first twenty-five terms.

asked by Anwar on October 24, 2016
56. ## algebra

The fifth term of an A.P exceeds twice the second term by 1.The tenth term exceeds twice the fourth term by 3. Find:1.the first term. 2.the common difference. 3.the sum of first twenty five terms.

asked by Raj on July 5, 2017
57. ## Arithmetic Progression

In an AP the 6th term is half the 4th term and the 3rd term is 15. a. Find the fist term and the common difference. b. How many times are needed to give a sum that is less than 65?

asked by Math on September 17, 2012
58. ## Math

The sum of the first seventeen terms of an arithmetic series is 493 The third term is 11. Find the first term and the seventeenth term. The n-th term is 3*n + 2

asked by Blonde Glamour on December 21, 2006
59. ## MATH

THE 14TH TERM OF AP IS 96 WHILE THE 25TH TERM IS 173 FIND THE A.19TH TERM B.SUM OF 13TH AND 56TH TERM

asked by ORJINTA on August 24, 2016
60. ## maths

the sum of 8th term in an a.p is 150 while the sum of 20th term is 880.find the 43rd term and the sum of the 12term

asked by debby on July 12, 2016
61. ## Maths

The 5th term of an exponential sequence is 4 and of 2nd term is 35(¡)find the 3rd term (¡¡)the 6th term (¡¡¡)the sum of the first 5th term?

asked by Job on May 17, 2011
62. ## G.p.

The second term of a g.p. Is 27 and 7th term is 1/9. Find the first term and the common ratio.

asked by Warnar on December 6, 2016
63. ## womens college

If the second term of a g.p. is 27 and 7th term is 1/9. Find the first term and the common ratio?

asked by kashish on May 21, 2017
64. ## SAT MATH

If the n^th term of a sequence is n^3 -5n, then how much greater is the 7th term than the 3rd term?

asked by Java on August 23, 2013
65. ## Quantitative techniques

The 7th term of the A.P is 34 and 15th term is 74. Find it's 40th term.

asked by Sheela on December 20, 2016
66. ## Ap series

Sum of first six term of an ap is 46 ratio of its 10th term to that of 30th term is 1:3. Find its 13th term

asked by Math on August 2, 2016
67. ## arithmetic

the sum of the 3rd and the 4th term is 44 and the sum of the 10th and the 15th term is 203. what is the sum up to the 20th term?

asked by linda on February 7, 2012
68. ## Math

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

asked by Linda on January 22, 2019
69. ## math

the second term of AP is 15 and the fifth term is 21.find (1) the common difference and the first term (2) The eight term (3) The sum of the first 16 term

asked by hussein jongo on November 16, 2016
70. ## math

given the geometric series 1+2+4+8 find the sum between (inclusively) the 5th term and the 15th term. what I did I'm sure its wrong but I tired like that : the 5th term is 16 because the r is *2 in each term and the a5th term is : 15=1*2^n 15=2^7.5

asked by sala on June 26, 2015
71. ## maths

in GP the product of the Second term and fifth term is double the firth term. find the first term if the sum is first terms is 80 show that r^3+r^2+r+1=40 b. hence find the value of r c.show that the value of the sum of the nth term is 3^n-1

asked by simanga on October 10, 2018
72. ## math

The third term of a G.P is 24 and the sum of the first two terms is 288. If all the terms are positive,find a)the first term and the common ratio b)the sum of all the terms from 4th term to the 8th term

asked by Anonymous on February 3, 2014
73. ## arithmetic

The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression

asked by Daniel on January 31, 2012
74. ## 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
75. ## new era

the third term of an AP is 5 while the 7th term is 13,find the 30th term of the AP

asked by cynthia on August 11, 2015
76. ## Maths

The 7th term of an a.p is 11 and the nth term is 3. Find the first five term

asked by Tony on January 19, 2016
77. ## maths

the third term of an AP is 5 while the 7th term is 13 find the 30th term of the AP

asked by cynthia on August 11, 2015
78. ## math Question

the 5th term in a geometric sequence is 160. The 7th term is 40. What are the possible values of the 6th term of the sequence +70 70 +80 80

asked by kristi on May 19, 2014
79. ## arithmetic

An arithmetic n geometric sequence have the same first term 2.with the 2nd term x. the sum of the 3rd term of the AS is equal to the 3rd term of the GS. Give the first 3 terms of both sequences.

asked by simphiwe on February 26, 2012
80. ## arithmetic

Each term of a progression is determined by adding 0.5 to the preceding term. the sum of the first 25 terms of the progression equals the square of the 25th term. calculate the possible value(s) of the first term

asked by Anonymous on February 21, 2010
81. ## math

The sum of 8th term of an A.P is 60 while the sum of 50th term is 880. Find the 43rd term

asked by efe on April 11, 2017
82. ## GP Caluculus

The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression

asked by Watermelon on December 1, 2011
83. ## GP Caluculus

The third term of a geometric progression is 16. The sum of the third term and the fourth term is 8.Find (a)the first term and the common ratio of the progression. (b)the sum of infinity of the progression.

asked by Watermelon on December 1, 2011
84. ## GP Caluculus

The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression

asked by Watermelon on December 1, 2011
85. ## Community technical college

Given that 1st term of an A.P is 7 and it's 10th term is twice the second term,calculate the (a) 19th term (b)sum of 28 terms (c) difference between 9th and 6th terms

asked by Benjamin on February 3, 2013
86. ## 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
87. ## Math

1) If the sum of the first n terms of a series is Sn where Sn=2n²-n, (a)prove that the series is an AP, stating the first term and the common difference; (b)find the sum of the terms from the 3rd to the 12th inclusive 2) In an AP the 6th term is half the

asked by Anonymous on April 17, 2008
88. ## math

1) If the sum of the first n terms of a series is Sn where Sn=2n²-n, (a)prove that the series is an AP, stating the first term and the common difference; (b)find the sum of the terms from the 3rd to the 12th inclusive 2) In an AP the 6th term is half the

asked by Anonymous on April 17, 2008
89. ## arithmetic

use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 50 and the 8th term is 18

asked by Taylor White on March 17, 2011
90. ## arithmetic

if sum of 20th term in an AP is equal to sum of 30th term,what is the sum of 50th term of the AP?

asked by amit on December 23, 2010
91. ## 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
92. ## math

If the 7th term of AP is 21,find the sum of first 13 terms of AP?

asked by kishor on January 3, 2016
93. ## Math binomial formula and sequence

a) use the binomial formula to find the 5th term of the expansion (2x - 3)^8 ------ i got 90720x? b) Find a_n, the general term for a geometric sequence, given that the fourth term, a_4 is 16 and the seventh term is -128 c) Find the sum of

asked by Kiirsty on May 25, 2014
94. ## Quick math help

Find the tenth term of the sequence: -6,1,8... Is it 57? For the sequence:2,4,8,16 the value of s4 is____. Is it 8? Find the 7th term of the sequence: 1,2,4,... Is it 64? Which term of this sequence is 275? 5,10,15,... Is it 1357? Find the 7thterm of an.

asked by Anonymous on October 12, 2016
95. ## Quick math help

Find the tenth term of the sequence: -6,1,8... Is it 57? For the sequence:2,4,8,16 the value of s4 is____. Is it 8? Find the 7th term of the sequence: 1,2,4,... Is it 64? Which term of this sequence is 275? 5,10,15,... Is it 1357? Find the 7thterm of an.

asked by Anonymous on October 10, 2016
96. ## Quick Math Help

Find the tenth term of the sequence: -6,1,8... Is it 57? For the sequence:2,4,8,16 the value of s4 is____. Is it 8? Find the 7th term of the sequence: 1,2,4,... Is it 64? Which term of this sequence is 275? 5,10,15,... Is it 1357? Find the 7thterm of an.

asked by Anonymous on October 11, 2016
97. ## Math

The first term of GP exceed the second term by 2 and the sum to infinity is 15 find the series and the sum of first 5 term

asked by Mohammad umar on October 3, 2017
98. ## Mathematics

The eighth term of an arithmetic series is twice the third term. The sum of the first eight terms are 39.Calculate the first term. Please help i've been stuck for hours on this question

asked by Ryan on March 15, 2017
99. ## maths

Given that the sum of the first four terms of a geometric sequence is 10 and the fourth term is half the third term . find the common ratio and the first term

asked by martin np on May 18, 2016
100. ## math

in a geometric sequence the first term is 2. The 3rd term is the sum of the 1st and 2nd term. Find the ratio, and the 2 terms

asked by saraah on June 3, 2013