167 Answered Questions for the topic Sequences

Sequences Algebra 2

10/26/17

#### The first four terms of an artithmetic sequence are 2, a-b, 2a+b+7, and a-3b, where a and b are constants

The first four terms of an artithmetic sequence are 2, a-b, 2a+b+7, and a-3b, where a and b are constants.
Find a and b.

Sequences

10/22/17

#### Geometric Sequences

Given: a1=4, a2=−5 and ai=ai−2−3ai−1−3.Find the next four terms in the sequence. How would I go about solving this?

10/15/17

#### In a geometric series, the 3rd term is 45 and the sum of the first 7 terms is 2735. Find the first term and the common ratio, r.

I need to do this without a graphing calculator... I got up until.. 45r7-2735r3+2735r2-45=0
What next steps do I need to do to get r?

Sequences

10/14/17

#### 9th honors 4.3 work

Juan is traveling to visit universities. He notices mile markers along the road. He records the mile markers every 10 minutes. His father is driving at a constant speed. (First time interval= 520...
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Sequences

10/11/17

#### Consider the following sequence of figures.

Consider the following sequence of figures.Figure 1 contains 5 line segments.Figure 2 contains 9 and figure three contains 13.Given that figure n contains 801 line segments, show that n=200....
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Sequences

10/11/17

#### The sides of a square are 16 cm in length.

5a. The sides of a square are 16 cm in length. The midpoints of the sides of this square are joined to form a new square and four triangles. The process is repeated twice.Let Xn denote the length...
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#### Let {xn} be a bounded sequence such that any of its convergent proper subsequences converge to the same limit l. Prove that {xn} converges to l.

Any hints on how to prove this? What can we use a a proper subsequence, knowing that a proper subsequence is any subsequence except for the sequence it self.

09/11/17

#### Find the first five terms of the following sequence: an = 2an-1 + 3 a1 = 2

Find the first five terms of the following sequence:an = 2an-1 + 3a1 = 2

Sequences College Algebra

08/12/17

#### Write the first five terms of the sequences with the following general terms.

a1 = 5, an = 2an-1 + n, n > 1

Sequences College Algebra

08/12/17

#### Write the first five terms of the sequences with the following general terms.

a1 = 5, an = -3an-1 - 1, n > 1

Sequences

08/11/17

#### next number in the sequence 2, 7, 26, 101, 400

next number in the sequence 2, 7, 26, 101, 400

Sequences Algebra 2

07/25/17

#### What is the recursive rule for this sequence?

2a,4b,8ab,32ab2,256a2b3,......

Sequences Algebra 2 Question

07/21/17

#### Write a simplified for the number of the movies that are displayed in the nth row? and what is the first 8 term of the sequence?

The first row of a movie display has 4 movies. Each row after the first has two more movies than the row above it

Sequences

07/13/17

#### Summation of infinite series

Find $\frac{3}{2^2(1)(2)}$ + $\frac{4}{2^3(2)(3)}$ +....+ $\frac{r+2}{2^{r+1}(r)(r+1)} +.... up to infinity.

#### Write rule for following sequence: 3, 12, 1, 2, 2, 7, 4, 17

I really need the answer to this!!!!!!! Please oh please :(

#### Write rule for following sequence: (3, 12) (1, 2) (2, 7) (4, 17)

I really don't understand this, and I need to answer this question. Please answer it for me and explain a bit how. Or give me a website i can find how.

Sequences

06/08/17

#### What is the sum of the first 22 terms of the sequence -62, -15, 32, 79, ... ?

Not sure how to do this?
Answers are either: 878, 9493, 925, 8568 or none

Sequences

06/01/17

#### 3, -6, 12, 4, 20, ? whats the next number please ?

i have tried a few variations on sequence possibilities but i am not getting the right answer

#### (a,b,c,d) the first three one is arithmetic sequence and the last three one is geometric sequence. d-a=3 b+c=?

Please can anyone solve this realy hard sequence problem?

Sequences

04/02/17

#### if a sequence is defined by c (sub1)=15 and c (sub n-1)+4 then what is the value of the 20th term of this sequence?

there are choices, but i do not know how to get an answer without doing all the previous 19 terms...is there a formula to use?
1)80
2)91
3)95
4)101

Sequences

04/02/17

#### the sequence a (sub1) = 6, a (sub n) = 3a (sub n-1) can also be written as?

an = ?

01/24/17

#### Find numbers/sum in sequence

In the sequence 1,4,5,6,7,8,10,16,18,... each number after the first two is the next number that can be expressed as the sum of two previous numbers in only one way. For example,10 is included...
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