Question

.

Answer 1

It's sigma notation

Answer 2

\[\sum_{k=3}^{7}\frac{ k+1 }{ k }=\frac{ 3+1 }{ 3 }+\frac{ 4+1 }{ 4 }+\frac{ 5+1 }{ 5 }+\frac{ 6+1 }{ 6 }+\frac{ 7+1 }{ 7 }\]w/c is the expanded form.
To find the sum add up the right hand side expressions.

Answer 3

ok

Answer 4

3653/140?

Answer 5

and the sum is 26.09?

Answer 6

I don't think that is the answer.

Answer 7

ok

Answer 8

It is 6.0928..

Answer 9

numerator is wrong, this is what i get
http://www.wolframalpha.com/input/?i=%5Cfrac {+3%2B1+}{+3+}%2B%5Cfrac{+4%2B1+}{+4+}%2B%5Cfrac{+5%2B1+}{+5+}%2B%5Cfrac{+6%2B1

Answer 10

or 853/140?

Answer 11

yeah that one

Answer 12

I had one last qeustion

Answer 13

On writing the expanded form on this sigma

http://i729.photobucket.com/albums/ww292/akatushi101/img5.gif