In the front row sitting three students and in every other row 11 students more than the previous row. Determine how many students are in the room when the room is 9 lines, and determine how many students are in the seventh row.
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:
- 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?
- Workman - shift
The worker produces 300 components per shift. How many components would be produced in 18 shift, if his performance gradually increased every shift by 3 components?
- Apples in baskets
Determine how many apples are in baskets when in the first basket are 4 apples, and in any other is 29 apples more than the previous, and we have eight baskets.
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
Your task is express the sum of the following arithmetic series for n = 14: S(n) = 11 + 13 + 15 + 17 + ... + 2n+9 + 2n+11
- AS sequence
In an arithmetic sequence is given the difference d = -3 and a71 = 455. a) Determine the value of a62 b) Determine the sum of 71 members.
- Sum of members
What is the sum of the first two members of the aritmetic progression if d = -4.3 and a3 = 7.5?
- Sequence 3
Write the first 5 members of an arithmetic sequence: a4=-35, a11=-105.
Between numbers 1 and 53 insert n members of the arithmetic sequence that its sum is 702.
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.
- Consecutive numbers
Sum of ten consecutive numbers is 105. Determine these numbers (write first and last).
Write the first 6 members of these sequence: a1 = 5 a2 = 7 an+2 = an+1 +2 an
- 6 terms
Find the first six terms of the sequence. a1 = 7, an = an-1 + 6
- AP - simple
Determine the first nine elements of sequence if a10 = -1 and d = 4
Write the first 7 members of an arithmetic sequence: a1=-3, d=6.
- Sequence 2
Write the first 5 members of an arithmetic sequence a11=-14, d=-1
- Nineteenth member
Find the nineteenth member of the arithmetic sequence: a1=33 d=5 find a19