# Math

Express the series 11+18+27+...171 using sigma notation.

a1+a2+a3+...ak
11+18+27+...171

thats all I have

1. 👍 0
2. 👎 0
3. 👁 62
1. could it be..

11+sigma(9n) for n=0 to 19

1. 👍 0
2. 👎 0
2. Explain please

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Math

Could someone explain this please? Thank you. Express the series 11+18+27+...171 using sigma notation. a1+a2+a3+...ak 11+18+27+...171

asked by Anonymous on October 1, 2008
2. ### Reiny or Damon or Bobpursley

Express the series 11 + 18 + 27 +...+ 171 using sigma notation. Usually you would take 27-18 and that's the step between numbers, right? (I think its the k-value?) But 27-18=9 and 18-11=7. Are we stepping by k+2 here? Like k, k+2

asked by Tabby on April 27, 2012
3. ### Math

How do I solve this? There are 171 seventh graders eating lunch. This number represents 45% of all of the seventh grades. How many 7th graders are there in the school? Would I take 171 x 45% and add them together or take 171 X .55

asked by Tyler on April 9, 2008
4. ### Math

How do I use the sigma notation to express the series : 1+5+25+125+625+3125?

asked by Leonard on March 10, 2011
5. ### math

Express the infinite series below using sigma notation and then find the sum. 64 + 40 + 25 + 15.625... Any explanation would be excellent. Thank you so much.

asked by Bob on April 30, 2012
6. ### Advanced Algebra

Express the infinite series below using sigma notation and then find the sum. 64 + 40 + 25 + 15.625... Any explanation would be excellent. Thank you so much.

asked by Trisha on April 30, 2012
7. ### math

I just need help with this. Write the series in sigma notation. 1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2 5 A.) 1/4 sigma N n=1 6 B.) 1/4 sigma n n=1 5 C.)sigma n/n+3 n=1 6 D.)sigma n/n+3 n=1

asked by Anonymous on April 10, 2013
8. ### math

I just need help with this. Write the series in sigma notation. 1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2 5 A.) 1/4 sigma N n=1 6 B.) 1/4 sigma n n=1 5 C.)sigma n/n+3 n=1 6 D.)sigma n/n+3 n=1

asked by Anonymous on April 10, 2013
9. ### how would I....

how would I express the repeating decimal representaion of 1/9 as an infinite series using sigma notaion? Limit of (as n-> infinity) (Sigma) 0.1 + (0.1)^2 + (0.1)^3 +... (0.1)^n = 0.11111.... = 1/9 I think drwis did this right, It

asked by math! on October 19, 2006
10. ### Maths

Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5 - ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((-1)^(k+1)) / k I'd be

asked by Anonymous on June 10, 2010

More Similar Questions