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 983372: if v(t) and a(t) have opposite signs, what observation can be made about the speed of the particle?
Click here to see answer by macston(5194)

Question 983271: 26,28,88,98,92 WHAT NEXT NUMBER
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Question 983370: 26,28,88,98 NEXT NUMBER
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Question 983399: The number of sequences are 17,if the second is 3,what is the first number?
Click here to see answer by josgarithmetic(39618)

Question 983371: . if the velocity v(t) and the acceleration a(t)n have the same sign, what observation can be made about the speed of the particle ?
Click here to see answer by Alan3354(69443)

Question 983369: . draw a diagram to describe the motion of the particle?
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Question 983172: Find the nth term of the harmonic sequence
1,4/5,2/3,4/7,... n=12
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Question 982614: y=2x^2-3x+4 at (2,6)
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Question 983472: What is the 10th term of the sequence, 5, 11, 17, 23 ...
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Question 983367: Given the position equation s(t)=t^3-3t^2+4 and the table
t 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
S(t)
V(t)
a(t)

Click here to see answer by Alan3354(69443)

Question 983547: if the number of the sequence is 17 if the second is 3 what is the first number
Click here to see answer by Fombitz(32388)

Question 983546: The number of the sequence is 17 if the second number is 3 then whats the last number.
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Question 983550: General term in a series is Ak = (1/k) � [1/ (k+1)], where k = 2, 3 �.100. Find the sum of all the terms.
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Question 983569: draw a diagram to describe the motion of the particle?
Click here to see answer by Alan3354(69443)

Question 983605: Assuming 66%loading on 9898 sqft = 16431sqft then
Assuming 66% loading on 18749 sqft what will be the answer
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Question 983558: Find the Harmonic mean of each set of numbers:
1.) 15 and 45
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Question 983684: Who am I? If you multiply me by 15 and 36, the result is 141.
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Question 983693: please help me with this question.
The number of the sequence is 17. If the second number is 3, what is the first number?
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Question 983763: what would be the number in the blank space below?
1 8 17 30 _ 76
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Question 983864: 7,16,8,27,
Click here to see answer by MathLover1(20850)

Question 983880: Find the sum of all the positive integers less than 100 that are multiples of 3.
Click here to see answer by josmiceli(19441)

Question 983875: A machine depreciates in value each year by 8% of its value at the beginning of the year. After how many years will its value first be less than half its original value?
Click here to see answer by jim_thompson5910(35256)

Question 983879: if the arithmetic mean of two positive quantities a and b is three times their geometric mean, find the value of a/b in surd form.
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Question 983904: Fine a6 for an arithmetic sequence where a1=3x+1 and d=2x+6.
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Question 983901: Fine The 9Th Term Of The Sequence 1, 2, 2,
Click here to see answer by Edwin McCravy(20056)

Question 983968: Find the sum of all the positive integers less than 100 that are multiples of 3.
Click here to see answer by Alan3354(69443)

Question 983967: Find the sum of all the positive integers less than 100 that are multiples of 3.
Click here to see answer by Alan3354(69443)

Question 983964: Prove that the geometric mean of two positive, unequal numbers is less than their arithmetic mean.
Click here to see answer by ikleyn(52788)

Question 984034: Find the sum of all the positive integers less than 100 that are multiples of 3.
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Question 984037: The nth term of an arithmetical progression is n and the nth term is m. Find the first term and the common difference.
Click here to see answer by josgarithmetic(39618)

Question 984035: the sixth term of a geometric series of positive number is 10 and the sixteenth term is 0.1. What is the eleventh term? Find its sum to infinity.
Click here to see answer by Boreal(15235)

Question 984029: A machine depreciates in value each year by 8% of its value at the beginning of the year. After how many years will its value first be less than half its original value?
Click here to see answer by Boreal(15235)

Question 984031: Prove that the geometric mean of two positive, unequal numbers is less than their arithmetic mean.
Click here to see answer by ikleyn(52788)

Question 984028: find the number of sides in a polygon whose interior angles are in arithmetical progression. the smallest being 120� and the common difference 5 �
Click here to see answer by MathTherapy(10552)

Question 984092: I am just beginning sixth grade math team, and I am stuck on this problem in summer homework. I'm not sure if this is even the correct section, but I think I understand that the subscript denotes place in a sequence, so this is my best guess. I can't figure out where to go from there. Most information seems to be about defining the sequence based on variables, but I have been given two suscripted numbers to subtract and can't find rules about how to do that. Here is the problem:
12321 subscript 5 - 12321 subscript 4 = ?
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Question 983960: - find the number of sides in a polygon whose interior angles are in arithmetical progression. the smallest being 120� and the common difference 5 �
Click here to see answer by ikleyn(52788)

Question 983883: The nth term of an arithmetical progression is n and the nth term is m. Find the first term and the common difference.
Click here to see answer by KMST(5328)

Question 983310: 1,2,2,4,3,8,7,10 what is next number?
Click here to see answer by Edwin McCravy(20056)

Question 984282: Solve for x in the squence x,17,3
Click here to see answer by Edwin McCravy(20056)

Question 984278: If the number of the sequence is 17 and the second is 3....what is the first number?

Click here to see answer by Fombitz(32388)

Question 984030: Prove that, in a geometric series which has a sum of infinity, each term bears a constant ratio to the sum of all the following terms.
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Question 984361: y= (x-2)/x^2
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Question 984360: y=x^2 (3x+1)
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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