Question

Simplify the complex fraction x/x+4/(1/x + 1/x+4)

Answer 1

Hang on a min...

Answer 2

The key is to figure out the LCD then multiply top and bottom by it:
http://sketchtoy.com/67056519

Answer 3

Omg that helped so much!! Could you help me with one more??

Answer 4

Sure

Answer 5

What is the standard deviation of the data set? round your answer to the nearest tenth.
81,85,82,93,85,84,95,87,88,91

Answer 6

Answers
A)2.7
B)4.4
C)11.6
D)19.5

Answer 7

That's quite the shift from simplifying fractions. You should post this as a separate question.

Answer 8

Okay thank yiu