Tutors Answer Your Questions about Sequences-and-series (FREE)
Question 250559: I need help with my Algebra please. It says tell whether each sequence is convergent or divergent. If it is convergent find it sum.
1. infinite E (2/3)^n n=0
2. infinite E (-4/11)^n n=0
3. infinite E (5^k+1)/3^k n=0
4. infinite E (3^n-1)/4^n n=1
Click here to see answer by jim_thompson5910(35256)  |
Question 251781: A teacher allows the students to each throw out their lowest test score in order to increase their overall grade. The original mean score of 5 tests is 75.2 After the removal of the lowest test, the mean score becomes 80.25. What is the score of the removal test?
Click here to see answer by stanbon(75887) |
Question 251659: Q1 If a,b,c,d are in Harmonic progression show that(a-c)(b-d)=4(a-b)(c-d)
Q2 If a+b,b+c,c+a are in H.P. show that a^2,b^2,c^2 are in A.P.
Q3 If x,y,z are in A.P.x,xy,z are in G.P.show thatx,x^2y,z are in H.P.
Click here to see answer by palanisamy(496) |
Question 252616: 1. A three-digit number divisible by 5 has a hundreds digit that is 2 more than the tens digit. If the number is 43 times the sum of the digit , what is the number?
Thank you very much for answering my first question . It helps A lot. Thanks again
Click here to see answer by palanisamy(496) |
Question 252616: 1. A three-digit number divisible by 5 has a hundreds digit that is 2 more than the tens digit. If the number is 43 times the sum of the digit , what is the number?
Thank you very much for answering my first question . It helps A lot. Thanks again
Click here to see answer by JimboP1977(311)  |
Question 252888: 1, 2, 1, 1, 2, . . .
The first five terms of a sequence are shown above. After the second term, each term can be obtained by subtracting from the previous term the term before that. For example, the third term can be obtained by subtracting the first term
from the second term. What is the sum of the first 36 terms of the sequence ?
(A) 0 (B) 4 (C) 12 (D) 24 (E) 30
Click here to see answer by drk(1908) |
Question 253192: +1, 0, 1, +1, 0, 1, +1, 0, 1 . . . . and so on, where the last number is +1, has a sum of
(A) +1 (B) 1 (C) +2 (D) 0 (E) 2
Click here to see answer by richwmiller(17219)  |
Question 253431: I have been trying to work a problem and the answer I come up with does't seem correct. The problem is as follows:
In an unusual salary arrangement for a temporary worker hired for 30 days, the pay on the first day is 1 cent, on the second day it is 2 cents, and the pay doubles each day. What is the total pay for the 30 days worked.
My answer is - $80,530,636.95 which doesn't seem right. Wondering where I am going wrong.
Lori
Click here to see answer by hokies(65)  |
Question 253431: I have been trying to work a problem and the answer I come up with does't seem correct. The problem is as follows:
In an unusual salary arrangement for a temporary worker hired for 30 days, the pay on the first day is 1 cent, on the second day it is 2 cents, and the pay doubles each day. What is the total pay for the 30 days worked.
My answer is - $80,530,636.95 which doesn't seem right. Wondering where I am going wrong.
Lori
Click here to see answer by richwmiller(17219) |
Question 253431: I have been trying to work a problem and the answer I come up with does't seem correct. The problem is as follows:
In an unusual salary arrangement for a temporary worker hired for 30 days, the pay on the first day is 1 cent, on the second day it is 2 cents, and the pay doubles each day. What is the total pay for the 30 days worked.
My answer is - $80,530,636.95 which doesn't seem right. Wondering where I am going wrong.
Lori
Click here to see answer by Theo(13342)  |
Question 254290: In a certain type of sequence, each number (except the first two)is the sum of the two numbers before it. For example, such a sequence might look like this:
1,2,5,7,12,19...where 7 is 2+5, 12 is 5+7, and so on.
If the first number of such a sequence is 1, and the tenth number is 111, what is the second number? You must use algebra and your answer must be exact.
I need the answer for this question by the end of today please. Thank you
Click here to see answer by scott8148(6628)  |
Question 254675: Three numbers form an arithmetic sequence, common difference being 11. If first number is decreased by 6, second number decreased by 1, and third number doubled, resulting numbers form a geometric sequence. determine the numbers that form the arithmetic sequence
Answer is -26, -15, -4, 14, 25, 36
Click here to see answer by drk(1908) |
Question 255036: I am having a hard time with this problem. Can someone please help me.
Let U = {0, 1, 2, 3, 4, 5, . . .}, A = {1, 2, 3, 4, . . .}, B = {4, 8, 12, 16, . . .} and C ={2, 4, 6, 8, . . .}. Determine the following.
A ∩ C
Click here to see answer by palanisamy(496) |
Question 255024: A golf ball is hit in the air. the path of the golf ball can be described by the equation h = 55t - 5t where h is the height of the ball in meters and t is the time after how many seconds will the ball be in 160 high
Click here to see answer by Greenfinch(383)  |
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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
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