posted by .

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?

3. Determine the geometric mean of 8 and 288

4.Find x if the geometric mean of 6 and x is 3sqrt2

5. Find two geometric sequences where the first term is 1 and the fifth term is 256

6. Insert the indicated number of positive geometric means between each pair of numbers.
a. 2 and 31.25 [2]
b. 17 and 272 [3]
c.1/5 and 1/15625 [4]
*What does this mean [number] ?(the one in my abc's questions)

7.What is the sum of the first 10 terms of the geometric series 6+18+54+162+...?

8. What is the sum of each infinite geometric series if it exists ?
b. -1-0.1-0.01-0.001-...
c. sqrt2+2+sqrt8+4+...

9. A rubber ball rebounds 3/5 of the height from which it falls. If it is initially dropped from a height of 30 meters, what total vertical distance does it travel before coming to rest ?

1. The Fibonacci sequence is defined recursively by a sub 1 = a sub 2 = 1 and a sub n+2 = a sub n+1 + a sub n for n > 1 . The first 5 terms of the said sequence is 1,1,2,3,5. what is the sum of the digits of the LCM of the first 10 terms of the Fibonacci sequence ?

2. In the triangular array of inters at the right, what the sum of the intergers in the 100th row ?
3 5
7 9 11
13 15 17 19
21 23 25 27 29
31 33 35 37 39 41

3. The sum of the first 4 terms of an arithmetic sequence a sub 1, a sub2 , a sub 3, a sub 4 is 2012 and the said 4 terms also form a geomeric sequence . Find a sub 4.

4. the 7th term of a geometric sequence is 20 and the 13th term is 12. Find the 10th term.

5. how many terms of the sequence -7,-4,-1,2,5,8,... must be taken to get a sum of 143?

6. the 5oth term of an arithmetic sequence exceeds the 10th term by 240. if the last digit of the 50th term is 8, what is the last digit of the 2012th term ?

7. the arithmetic mean of two positive integers is 1/2 more than their geomtric mean. if one of the integers is 1, what is the other integer ?

8.Find the sum of the first 2012 terms of the sequence 1+3-5+7+9-11+13+15-17+...

9.the sum of the arithmetic mean and the geometric mean of 2 positive numbers is 2012. what is the sum of the positive square roots of the 2 numbers ?

10. wat is the sum of 3 distinct positive integers whose geometric mean is 7 ?

  • Math *URGENT -

    Wow, classic case of urgent "homework dumping"

    I will be very happy to check your answers.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    the 12th term in a geometric sequence is 49, and the 14th term is 2401 . Find the 15th term
  2. math

    hi if the second term of a sequence is root(2) and the seventh term is 8 what is the nth term equation(Geometric sequence) thanks
  3. Math

    A sequence is formed by adding together the corresponding terms of a geometric sequence and and an arithmetic sequence.The common ratio of the geometric sequence is 2 and the common difference of the arithmetic sequence is 2.The first …
  4. 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 …
  5. Math binomial formula and sequence

    a) use the binomial formula to find the 5th term of the expansion (2x - 3)^8 ------ i got 90720x?
  6. Math

    1. What is the tenth term of the geometric sequence whose first term (a1) is 16 and the common ratio (r) is –½?
  7. Math

    1. Find the 11th term of the geometric sequence 64, -32, 16, -8, … . 2. Find the 1st term of a geometric sequence with a 10th term -1024 and r = -2. 3. Find the sum of each infinite geometric series, if possible. a. 10 + 2 + 2/5 …
  8. maths

    given 1,0.5,4,o.25,7,0.125,10 assume this pattern continues consistently 1.write down the 33th term in this sequence 2.determine the sum of the first 24 terms in this sequence.give the answer to five decimal place a geometric …
  9. Sj

    Mathematics......Under number patterns-Geometric series If a question goes.determine the expression for the nth term of the following sequence if the a) 4th term is 24 and the 7th term is 192 in a geometric sequence.what formula do …
  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