87 Answered Questions for the topic Sequence

Sequence Math

02/10/18

#### If the eighth term of a geometric sequence is -49152, and the eleventh term of an geometric sequence is -3145728 what is the first term and the common ratio?

If the eighth term of a geometric sequence is -49152, and the eleventh term of an geometric sequence is -3145728 its first term a1=
and common ratio r =

Sequence

02/07/18

#### If a(n)=a(n-1)*(n-2)^2, what is the formula for a(n) without knowing a(n-1)?

I know that the n-th term of a geometric sequence (with initial value 'a' and a common ratio 'r') can be calculated as: an=ar(n-1). How do you calculate the nth term however, if 'r' itself is...
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Sequence

12/11/17

#### Finding r in an infinite geometric sequence.

The first two terms of an infinite geometric sequence, in order, are 2log2x, log2x, where x > 0. Find r.

Sequence

12/07/17

#### Consider a geometric sequence where the first term is 768 and the second term is 576.

6. Consider a geometric sequence where the first term is 768 and the second term is 576. Find the least value of n such that the nth term of the sequence is less than 7.

Sequence

10/10/17

#### The first three terms of an arithmetic sequence are 36, 40, 44, ...

7a. The first three terms of an arithmetic sequence are 36, 40, 44, ...
(i) Write down the value of d.
(ii) Find u8 .
7b.
(i) Show that Sn = 2n2 + 34n.
(ii) Hence, write down the value of...
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08/17/17

#### in an arithmetic sequence the 3rd term is 16 the 7th is 34 find the 1st term common difference and 12th term

Please answer as soon as possible!😞 This is for my friend and not for me 😅 Its her exam tomorrow 😕 Thank you do much in advance!😁💓

Sequence

08/01/17

#### The population of a certain province increases by 10% each year. What will be the population of the province after five years from now if it is now 200,000?

Help pls for assignment what formula will i use arithmetic or geometric

05/07/17

#### (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?

Sequence

04/11/17

#### Nth term of sequence 1, 3, 15, 61, 213

Nth term of sequence 1, 3, 15, 61, 213 and also 6th term ...thx

Sequence Precalculus

04/04/17

#### Find the sum of the first 9 terms of the sequence.

Show all work. 2, -7, -16, -25, ...

Sequence

03/08/17

#### C(n)=-6+5(n-1)

What is the 8th term in the sequence can you help me out with this problem

#### 2!/7 + 3!/14 + 4!/21 + ... + (n+1)!/7n

Express the sum using summation notation. Thank you.

Sequence

12/01/16

#### First Term of Seq. 1

what is the first term of the sequence An = -n2 and n≥1??
Please Help Solve with step by step solution to problem and the final solution.

Sequence Sequences

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

Sequence

08/31/16

#### Sequence and

in the sequence an the n-th term is defined as (an-1-1)2.if a3=64 then what is the value of a1?
can anybody show me the shortest method to solve this?

#### sum to infinity

A ball is thrown vertically upwards from the ground. It rises to a height of 10m and then falls andbounces. After each bounce it rises vertically to 2/3 the height from which it fell.
(i) Find...
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05/03/16

#### Please help me with the proof 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
Please help me. I'm reviewing for my final and something like this may appear on it.

02/14/16

#### AP 1st term=x+1, 2nd term=2x-1, 4th term=2x+5, find x, a, d

AP 1st term=x+1, 2nd term=2x-1, 4th term=2x+5, find x, a, d
Please help me how to find even one of these values. I don't even have the sum of given terms, so I really have no value to progress.

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,...
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Sequence

01/21/16

#### 6,22,35,25 what is the next number

I am 65 years old and I can not figure this out.!

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?

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