157 Answered Questions for the topic Sequences

09/22/15

Solve this recurrence relation and find a2 and a3?

We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if:   a) a0 = 1 and a1= 1? b) a0 = 0 and a1 = 0?  

08/08/15

How many terms are in the sequence -83, -66, -49, -32,...597

Not sure where to begin in order to solve this question... I have no idea how to do it 

07/25/15

What is the 10th term in the sequence 1,8,27,64

 Its a sequence and have been stuck on it for ages

07/19/15

sequence/series question. PLEASE HELP!!!!

What is 32nd term if given the following      X                 Y   1                  1 2                  3 3                  6 4                  10     Please help!!!!. I can see... more

07/17/15

If the sum of 20 consecutive odd integers is 120, then what is the value of the largest integer?

Please and thank you! Your help is greatly appreciated

07/05/15

Find a formula for the general term an of the sequence (starting with a1): {-425,536,-649,764,…}.

I want to know the answer for this question Find a formula for the general term an of the sequence (starting with a1):{−425,536,−649,764,…}.

07/02/15

sequences topic

two cars start together int he same direction from the same place. the first goes with the uniform speed of 10 m/h .the second goes at speed of 6 m/h in the first hour and increases the speed by... more

07/02/15

sequences topic

if 1/2 of the air in a tank is removed with each stroke of a vacuum pump ,what fraction of the original amount of air has been removed after 4 strokes    (a)... more

07/02/15

sequences topic

a company sales is described as Sn=2Sn-1 +Sn-2 +1 units , Sn represents the nth sale. if the company experienced a jump in a sale by 70 units between 4th and 5th sale .how many will it sell in the... more

07/02/15

sequences topic

(1) the digits of a positive integer ,having 3 digits when taken in order are in arithmetic progression and their sum is 18 .the number obtained by reversing the digits is 396 less than the... more

06/29/15

if the series is given as a,b,b,c,c,c,d,d,d,d ....then which term will replicate u?

(a)200 (b)210 (c)215 (d)229 (e)232

06/04/15

How to obtain the sum?

Find the sum of the first seven terms of the sequence. 3, 3/2, 3/4,... 3/8, 3/16, 3/32, 3/64So i get that the LCM is 64 but how do i find the sum of all the 3's? Thanks

05/31/15

Find the following sum: 1+2+4+8+...+2^k-1

I need help finding the next terms after 2^k-1

05/29/15

Find the indicated term for each sequence, whose general term is given.

an=-n2;a15    

05/29/15

Sequences, Find a general term

Find a general term an for each sequence, whose first four termsare given.    3, 7, 11, 15       ------------------------------------------------------- Q: What is the formula for this type... more

05/26/15

Find the indicated term for each sequence, whose general term is given.

an=100-7n;a50

05/21/15

the population at west is decreasing at a rate of 1% annually. find the number of students in 13 years.

the unit is sequence and i have to have the equation in explicit form, and know how to plug. but i get stuck there. A1= 2462 is the first year they open of students.

05/07/15

<3,^4,>7,<6,^8,>14,<9,^12

what is the next number in this sequence  

04/07/15

Evaluate enter only the sum

S21for 23+20+17+14+.....

04/07/15

Find the first terms of the sequence given the following recursive formula

a1 =8, a2=-3, and an=2an-1+an-2 for n≥3 enter the terms separated by commas

04/07/15

Find the explicit formula that produces the given sequences

3/2,3/4,3/83/16.........

04/07/15

Find the 29th term

-121,-108,-95,-82

03/28/15

An Isotope has a half-life of 15 days. Make a table showing the half-life of this isotope from 32 g to 1 g. List the time (in days,starting with t = 0) in the

...in the first column and the mass remaining in the second column. Which type of sequence is used in the first column and in the second column?   I do not know where to begin on solving this... more

03/26/15

Find the next two terms in the following sequence

13,-5,-35,-77,... enter the terms separated by a comma

03/26/15

Find the 11th term in geometric sequence

a3 is24 and a5 is 96

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