Questions on Algebra: Sequences of numbers, series and how to sum them answered by real tutors!

Tutors Answer Your Questions about Sequences-and-series (FREE)

Question 991841: 2. Consider the geometric sequence 8, 12, 18, 27, �
(a) Find the formula for its general term.
(b) Find its 17th term to 3 significant figures.
(c) Use algebra to find out which is the least term of the sequence greater than 1000

Click here to see answer by Edwin McCravy(20056)

Question 991546: what is the smilarity between 85,17,19,4 &2

Click here to see answer by Edwin McCravy(20056)

Question 990846: what is the next term in this sequence ?
5, 34, 142, 322, ?
Click here to see answer by Edwin McCravy(20056)

Question 989289: can you describe the pattern? 2,3,6,11,18 then find the next three numbers

Click here to see answer by Edwin McCravy(20056)

Question 992528: can you describe the pattern
3,20,63,144
Click here to see answer by Edwin McCravy(20056)

Question 992553: Write a rule for the nth term of the arithmetic sequence that has the
terms a3=17 and a14=50.
Click here to see answer by stanbon(75887)

Question 992551: Write a rule for the nth term of the arithmetic sequence that has the
terms a3 5 17 and a14 5 50.

Click here to see answer by Edwin McCravy(20056)

Question 992929: how do i solve this problem
27 :63 = 12 : Q
q= ?
trying to help grandchild but don't know how to do it.
Click here to see answer by macston(5194)

Question 993040: what is the best similarity between numbers: 85,17,19,4,2?
Click here to see answer by josgarithmetic(39617)

Question 993072: What is the sum of the series 0.5, 2.5, 12.5, to 7th terms?
Click here to see answer by stanbon(75887)

Question 993264: Determine the number of terms in an arthmetic
sequence with t3= -17.5 and t10= -52.5. the
final term in the sequence is -147.5
Click here to see answer by Edwin McCravy(20056)

Question 993348: Tn=a+(n-1)d
T15=35+(15-1)-20

Click here to see answer by ikleyn(52787)

Question 993407: Patrick increases how far he cycles each week by 20%. If he cycled 60km in his first week, how many km did he travel in his fifth week?
Click here to see answer by Cromlix(4381)

Question 993570: What are five sequential numbers whose total is 63
Click here to see answer by josgarithmetic(39617)

Question 993570: What are five sequential numbers whose total is 63
Click here to see answer by solver91311(24713)

Question 993570: What are five sequential numbers whose total is 63
Click here to see answer by ikleyn(52787)

Question 993609: what is the similarity between 85, 17, 19, 4 and 2?
Click here to see answer by MathLover1(20850)

Question 993616: I need ur help pliz many people have failed to give me the answer .qn what is the similarity of the numbers 85,17,19,14 and 2
Click here to see answer by MathLover1(20850)

Question 993616: I need ur help pliz many people have failed to give me the answer .qn what is the similarity of the numbers 85,17,19,14 and 2
Click here to see answer by Alan3354(69443)

Question 993596: What's the similarity between 85, 17, 19 and 84
Click here to see answer by Alan3354(69443)

Question 993789: intergers find the sum -8 + (-5)
Click here to see answer by jim_thompson5910(35256)

Question 993789: intergers find the sum -8 + (-5)
Click here to see answer by Alan3354(69443)

Question 993843: Find the next three terms 1,3,7,15,31
Click here to see answer by ikleyn(52787)

Question 993850: If you are given 1,3,5,7,9,11,13,15
numbers.
Then add any numbers from series in the
description below. So the answer
will becomes 30 _____+____+_____
=30
Note::::' You can also repeat any
number from the above given
series
Click here to see answer by satyareddy22(84)

Question 993417: which number is next in the series: 1, 3, 5, 15, 75, X, Y, Z?

Click here to see answer by apurvaparashar1995@gmail.com(1)

Question 993979: If n = 0, 1, 2, 3, 4, etc. Then how do you get 1, 5, 9, 13, 17, etc.?

Click here to see answer by Boreal(15235)

Question 994004: Good Day,
can you please help me with this question.
"List the first ten terms of each of these sequences and give the formula of the n-th term for the sequence whose n-th term is obtained by subtracting 2 from twice its position value."

Click here to see answer by stanbon(75887)

Question 994082: How many terms are there and what is the sum for this series:
5+10+20+...5�(2^n)
Tried to answer and got number of erms as just "n" and hence the sum as (5(1-2^n))/-1 which doesn't seem right.
Click here to see answer by rothauserc(4718)

Question 994132: find the general formula for (-1/4, 2/9, -3/16, 4/25,...)

Click here to see answer by Theo(13342)

Question 994340: what is the similarity between these numbers 85, 70, 19, 4, 2
Click here to see answer by Alan3354(69443)

Question 994341: what is the similarity between these numbers, 85, 17,19, 4, 2.
Click here to see answer by Alan3354(69443)

Question 994585: 1,7,13.....are in ap.can the sum of any terms be 175?justify
Click here to see answer by KMST(5328)

Question 994657: An arithmetic sequence has a common difference equal to 10 and its 6th term is equal to 52 find its 15 the term
Click here to see answer by stanbon(75887)

Question 994626: what numbers in the following where you will add that the sum will be 85:
32,32,4,7,3,5,-9,-7
Click here to see answer by Alan3354(69443)

Question 994659: The first term of an arithmetic sequence is equal to 6 and the common difference is equal to 3. Find the formula for the nth term and the value of the 50th term .
Click here to see answer by stanbon(75887)

Question 994678: Find the sum of all the integers from 1 to 1000
Click here to see answer by Boreal(15235)

Question 994663: The arithmetc sequence has a common difference equal to 10 and its 6th term is equal to 52 find its 15th term
Click here to see answer by fractalier(6550)

Question 994853: The sum of five consecutive even integers is −20. Find the integers. List them in order
from smallest to largest.
Click here to see answer by ikleyn(52787)

Question 995233: 7,8,10,13,17,22,...
Click here to see answer by ikleyn(52787)

Question 995315: Im haveing troble doing this equation. I get mixed up in the steps. Can you please help? Thank you!
6x-y+2z=8
2x+3y-z=-9
4x+2y+5z=1
Click here to see answer by MathLover1(20850)

Question 995358: find the sum of series 101+99+97+..+47
Click here to see answer by rothauserc(4718)

Question 995412: How far can you run on a 100m ground?
Click here to see answer by Alan3354(69443)

Question 155130: I need to know what number comes next in this sequence and why.
9,73,241,561,1081,1849,_?__
Click here to see answer by terryriegel(1)

Question 995635: I have to use one of the arithmetic series formula. The arithmetic series 5 + 9 + 13 +...+ tn has a sum of 945. How many terms does this series have?
Click here to see answer by MathLover1(20850)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790