# AS sequence

In an arithmetic sequence is given the difference d = -3 and a

a) Determine the value of a

b) Determine the sum of 71 members.

_{71}= 455.a) Determine the value of a

_{62}b) Determine the sum of 71 members.

**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- AP - basics

Determine first member and differentiate of the the following sequence: a_{3}-a_{5}=24 a_{4}-2a_{5}=61 - AP - simple

Determine the first nine elements of sequence if a10 = -1 and d = 4 - Sequence 3

Write the first 5 members of an arithmetic sequence: a_{4}=-35, a_{11}=-105. - Sequence

Between numbers 1 and 53 insert n members of the arithmetic sequence that its sum is 702. - Sequence

Write the first 7 members of an arithmetic sequence: a_{1}=-3, d=6. - Sequence

Write the first 6 members of these sequence: a_{1}= 5 a_{2}= 7 a_{n+2}= a_{n+1}+2 a_{n} - AS - sequence

What are the first ten members of the sequence if a11=22, d=2. - Sequence 2

Write the first 5 members of an arithmetic sequence a_{11}=-14, d=-1 - Nineteenth member

Find the nineteenth member of the arithmetic sequence: a1=33 d=5 find a19 - Trees

A certain species of tree grows an average of 0.5 cm per week. Write an equation for the sequence that represents the weekly height of this tree in centimeters if the measurements begin when the tree is 200 centimeters tall. - Third member

Determine the third member of the AP if a4=93, d=7.5. - Sum of members

What is the sum of the first two members of the aritmetic progression if d = -4.3 and a3 = 7.5? - Seats

Seats in the sport hall are organized so that each subsequent row has five more seats. First has 10 seats. How many seats are: a) in the eighth row b) in the eighteenth row - Roof

Tiles are stacked in rows on the trapezoidal shaped roof. At the ridge is 15 tiles and each subsequent row has one more tile than in the previous row. How many tiled is covered roof if lowermost row has 37 tiles? - Series

Your task is express the sum of the following arithmetic series for n = 14: S(n) = 11 + 13 + 15 + 17 + ... + 2n+9 + 2n+11 - Tubes

Iron tubes in the warehouse are stored in layers so that each tube top layer fit into the gaps of the lower layer. How many layers are needed to deposit 100 tubes if top layer has 9 tubes? How many tubes are in bottom layer of tubes? - Theorem prove

We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?