arithmetic

posted by .

What is the sum of a 10–term arithmetic sequence where the first term is 3 and the last term is 75?

  • arithmetic -

    10*(3+75)/2

  • arithmetic -

    IT IS CORRECT!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Precalculus

    The 8th term in an arithmetic sequence is 5, and the sum of the first 10 terms is 20. Find the common difference and the first term of the sequence. Alright so in an arithmetic squence the difference d between any two successive numbers …
  2. Mathematics : Arithmetic Sequence

    The 5th term and the 8th term of an arithmetic sequence are 18 and 27 respctively. a)Find the 1st term and the common difference of the arithmetic sequence. b)Find the general term of the arithmetic sequence.
  3. Math - Arithmetic Sequences

    The sum of the 4th and the 14th term of an arithmetic sequence equals 22. The 9th term is 4 larger than the 4th term. Calculate the first term of the sequence. I've been trying to solve this for like an hour but I just can't figure …
  4. arithmetic

    An arithmetic n geometric sequence have the same first term 2.with the 2nd term x. the sum of the 3rd term of the AS is equal to the 3rd term of the GS. Give the first 3 terms of both sequences.
  5. Arithmetic Sequence

    Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.
  6. Maths

    1..The first 2 terms of a geometric progression are the same as the first two terms of an arithmetic progression.The first term is 12 and is greater than the second term.The sum of the first 3 terms od the arithmetic progression is …
  7. Algebra

    True or False 1. – 5, – 5, – 5, – 5, – 5, … is an arithmetic sequence. 2. In an arithmetic sequence, it is possible that the 13th term is equal to its 53rd term. 3. In an arithmetic sequence, the common difference is computed …
  8. mathematics

    1.1 the third term of an arithmetic sequence is 8 and the 15 term is 44 . Calculate: 1.1 the common difference and first term. 1.2 the sum of the first 50 terms. 1.2 1;4;7;10.... Is an arithmetic sequence .find: 1.2.1 the 30 term.
  9. arithmetic sequence

    the 40th term of an arithmetic sequence is equal to the sum of the 20th and 31st term. if the common difference of the sequence is-10. find the first term.
  10. Algebra

    I am so lost on these problems. Write a geometric sequence that starts with 3 and has a common ratio of 5. What is the 23rd term in the sequence. Write an arithmetic sequence that has a common difference of 4 and the eighth term is …

More Similar Questions