168 Answered Questions for the topic Sequences

Sequences

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
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Q: What is the formula for this type...
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Sequences

05/26/15

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

an=100-7n;a50

Sequences

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.

#### 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

#### Find the explicit formula that produces the given sequences

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

Sequences

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...
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#### Find the next two terms in the following sequence

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

#### What is the 21sr term in arithmetic sequence in which

a3 is 59 and a7 is 103
enter only the term

#### Write a possible explicit formula for the following sequence

-17,-22,-27,-32,...
an=?

#### Limits of sequences, please help!

limn->infinite[ (-1)n/(n3-12)}
I dont know what to do with (-1)n, if it's equal to infinite then if I divide by n3, it's infinite over infinite. I dont understand :S. And the question is if...
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#### Write a formula for the general term

Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.
2, 5, 8, 11,....
an = ?

#### Write a formula...

Write a formula for the general term (the nth term) of the geomteric sequence. Then use the formula for an to find a7, the seventh term of the sequence. 3, 15, 75, 375
NOTE: The system tells me...
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01/30/15

#### Please help solve!

There are two unmarked buckets by a stream.There are two unmarked buckets by a stream. the buckets hold 19 and 8 gallons of water respectively. How can 14 gallons of water be obtained, to take...
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01/30/15

#### There are two unmarked buckets by a stream.

There are two unmarked buckets by a stream. the buckets hold 19 and 8 gallons of water respectivelY. how can 14 gallons of water be obtained, to take home? complete the sequence below, the numbers...
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12/09/14

#### Find the sum

a. Find the sum 4,(4/3),(4/9),(4/27),(4/81)
b. Find the sum of the first 70 terms
Please explain both answers in detail

Sequences

12/04/14

#### the sum of three consecutive numbers is 60. Find the numbers.

find three consecutive numbers whose sum is 60. I tried this problem and keep getting it wrong. Please help!

Sequences Sequence

12/02/14

#### How do you find the first four terms of the sequence?

f(1)=6, f(n)=1/f(n-1) for n>2

11/29/14

#### List the first six terms of the sequence defined recursively by (1) z1 = 0, z2 = 1, z3 = 2, and (2) for m = 4, zm = zm-1 + 2zm-2 + 3zm-3.

Completely lost

Sequences Trigonometry

11/16/14

#### Cards of Deck Probability

A.One card is drawn from a standard 52 card deck. Find the probability that it is a 7 or a Jack if drawing is done with replacement.
B.Two cards are drawn from a standard 52 card deck. Find the...
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Sequences Trigonometry

11/16/14

#### Cards of Deck

One card is drawn from a standard 52 card deck. Find the probability that it is a 7 or a Jack if drawing is done with replacement.

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