Calculate the difference of arithmetic progression if the sum of its first 19 members Sn = 8075 and the first member is a1 = 20
Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this verbal math problem are needed these knowledge from mathematics:
Next similar math problems:
- Difference AP 4
Calculate the difference of the AP if a1 = 0.5, a2 + a3 = -1.1
- 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.
- Sequence 3
Write the first 5 members of an arithmetic sequence: a4=-35, a11=-105.
- 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 2
Write the first 5 members of an arithmetic sequence a11=-14, d=-1
Write the first 7 members of an arithmetic sequence: a1=-3, d=6.
- AS - sequence
What are the first ten members of the sequence if a11=22, d=2.
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
- AP - simple
Determine the first nine elements of sequence if a10 = -1 and d = 4
Between numbers 1 and 53 insert n members of the arithmetic sequence that its sum is 702.
- Third member
Determine the third member of the AP if a4=93, d=7.5.
Your task is express the sum of the following arithmetic series for n = 14: S(n) = 11 + 13 + 15 + 17 + ... + 2n+9 + 2n+11
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?
- Imaginary numbers
Find two imaginary numbers whose sum is a real number. How are the two imaginary numbers related? What is its sum?
- GP members
The geometric sequence has 10 members. The last two members are 2 and -1. Which member is -1/16?
- Theorem prove
We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
- Parametric equation
Find the parametric equation of a line with y-intercept (0,-4) and a slope of -2.