Post a New Question

Please...help me over here.,Sequence and series

posted by .

Insert three geometry means between 1 and 81. I can't even solve it.

  • Please...help me over here.,Sequence and series -

    remember the terms of a geometric sequence run like this:
    a ar ar^2 ar^3 ...

    so we
    1 , r, r^2, r^3, 81

    term(5) = 81
    r^4 = 81
    r = ± 3

    so the sequence is
    1, 3, 9, 27, 81
    or
    1, -3, 9, -27, 81

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2

    would some one please check these for me 1. divide x^2-36y^2 over 5x^2+30y divide (x^2-6xy) A: x+6y over (5x)(x^2+6y) 2. Add. Express your answer in simplest form. 2x 0ver x^2+15x+54 + 4over x+6 A: 6 over x+9 3. solve: (9 over x-5) …
  2. English Comma splices and run on sentences

    Question 17 5 points Save The movie was over _______ everyone really seemed to enjoy it. insert a comma insert the word however insert a semicolon insert a hyphen my answer insert hyphen
  3. Math - Geometry

    Please help! Need to find the 6th and nth terms in this sequence - and solve for the rule or process. here's the sequence: 1,3,9,27,81 What is the process or formula to get the nth term in the sequence. Thanks!
  4. Math *URGENT

    Please give the answers and solutions for each. 1.If the second term is 2 and the seventh term of a geometric sequence is 64, find the 12th term. 2. Which term if the geometric sequence 18,54,162,486,... is 3,188,646?
  5. Math

    I'm learning series and sequences (grade 11). Please check that my steps show I understand what I'm doing/the concept and my answer as well: 5. The consecutive terms of an arithmetic sequences are 3.6, y, 8.2. Find the value of y. …
  6. maths

    Insert three geometric means between 1 and 81.
  7. arithmetic

    1. The first and last term of an A.P are, a and l respectively, show that the sum of nth term from the beginning and nth term from the end is a + l. 2. If mth term of an A.P be 1/n and nth term be 1/m, then show that its mnth term …
  8. arithmetic

    1. The first and last term of an A.P are, a and l respectively, show that the sum of nth term from the beginning and nth term from the end is a + l. 2. If mth term of an A.P be 1/n and nth term be 1/m, then show that its mnth term …
  9. 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 …
  10. algebra

    1. The geometric mean between the first two terms in a geometric sequence is 32. If the third term is 4, find the first term. 2. Insert a geometric mean between k and 1/k. 3. If 2 and 3 are two geometric means between m and n, fond …

More Similar Questions

Post a New Question