157 Answered Questions for the topic Sequences

11/21/16

AP Calc BC Sequences question...?

If a1+a2+a3+...+a80=2012 and the sequence has a common difference of 5, what is the sum of a2+a4+a6+...+a80? I cannot figure out how to do this! Any help is appreciated (and no, I'm not allowed to... more

11/04/16

PLEASE HELP with SEQUENCES!! Determine whether the sequence is increasing, decreasing, or not monotonic.

Determine whether the sequence is increasing, decreasing, or not monotonic.   an = 4n(−7)n   Is the sequence bounded? Yes or No? Explain.

11/04/16

Determine whether the sequence is increasing, decreasing, or not monotonic.

Determine whether the sequence is increasing, decreasing, or not monotonic.   an = 1/(6n+7)   Is the sequence bounded? Yes or No? Explain.

10/08/16

What is the limit of the sequence

limit n->infinity −(7.2^n+5.5^n/7+3.5^(n+1))?

09/24/16

More sequences

To save money for holiday presents, a person deposits $15 in a savings account on January 1, and then deposits an additional $15 every week thereafter until Christmas.   A. Write a sequence for... more

09/24/16

Assistant on sequences

The entry level salary for a teacher is $24000 with a 3% increase after every year of service. Write a sequence for the first 5 years of service.   Find the general term of sequence on part A

09/03/16

What is the next number in this sequence: 2, 7, 26, 101, 400, ?

The possible answers are:   15958006951840 1595 800 695 1840  

09/02/16

Progressions

In a game a basket and 16 potatoes are placed in line at equal intervals of 6 feet. how long will a competitor take to bring the potatoes one by one into the basket , if he starts from the basket... more

08/28/16

Find the sum on terms

find the sum of the terms in the sequence 1,4,7,...,193.

06/27/16

geometric series

The first 3 terms of a geometric expression are x, 10 − x ,and  2x + 1 where x > 0.Find the value of the common ratio, r.

06/05/16

Calculate the sum

Calculate the sum: 3+ 7+ 11+ ......+ 399

05/31/16

For the geometric sequence, t of 4=54, t of 7=1458 find a, and r

 I know you could just use trial and error to see what you could multiply the ones in between (t5 and t6) by to get from t4 to t7 , but is there a way to do this other than trial and error, like... more

05/09/16

Finding the general term, in therms of n

What is the general term, in terms of n, for the sequence 4, 8,12, 16, ....?

05/03/16

Please help with proof by induction below

let 〈xn〉n=1...∞ be a sequence satisfying xn+1=xn-xn-1 for each n. Prove that ∀ n ∈ N, xn+6=xn by induction

04/15/16

A game involves rolling a fair six-sided die. If the number facing upward on the die is a whole number multiple of three, the player wins an amount equal to the

A game involves rolling a fair six-sided die. If the number facing upward on the die is a whole number multiple of three, the player wins an amount equal to the number on the die times $20. If the... more

04/08/16

An=2An-1+An-2

find the next four term of the term of the sequence  A 3 A4 A5  A6 A8 

02/14/16

Formula nth term series 4,9,16,25

Hello, could you help me find the formula for this series, please? How do I go about it?  4,9,16,25,...I know it starts with adding 5 and adding 2 more with every number, so adding 7 next, then 9,... more

01/19/16

Sequence generators

1,1,2,3,5,8

12/29/15

Consider two different arithmetic sequences

Consider two different arithmetic sequences: 3, 14, 25, 36,47,58,69,80, successively by 11 and 2, 9, 16,23 successively by 7. What are the first 10 numbers which appear in both sequences

12/13/15

(College Precalc) Arithmetic Sequences - Finding the sum given two random terms

A finite arithmetic series has 90 terms with a5=182 and a86=291.6. What's the sum of the series?   I have no idea where to begin. I know to find the sum when I'm given the first few terms and the... more

11/18/15

Vivian wrote the following math sequence, 8,16,32,64,108. Using the multiply by 4 rule what is the next number

why dud they use the multiply by 4 rule

11/18/15

Formula to find a1 from an=a1+(n-1)d

Need help with the above equation

10/19/15

f(1) =1 and f(n)=2*f(n-1) +1 for each whole number greater than 1

help with math problem

10/13/15

how many people have heard the rumor by the end of saturday?

on sunday, bill heard a rumor. on monday, he called jan & stan to tell them the rumor. on tuesday, jan and stan each called two of their friends to tell them the rumor. those people then each... more

09/22/15

We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if

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

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