Posted by Jmiah on November 04, 2002 at 11:26:34:
In Reply to: Okay, I need help again. posted by Jmiah on November 04, 2002 at 11:24:54:
: Okay, here's the deal. I was doing a multiple choice test when I came across this one:
: sqrt of (-16/7)=
: A) 4/7 B) -4/7
: C) 4(sqrt of 7)/7 (i) D) 4/(7i)
: This is what i figured:
: (sqrt of -16)/(sqrt of 7)=
: 4i/sqrt of 7=
: 4i(sqrt of 7)/7
: The closet answer they have is C, which is also what they had listed in the book. I need to know how they got what they did. I don't have any clue how they seperated the i from the rest of the equation. Also, i IS sqrt of -1, or an imainary number.
: THANX‼‼‼‼‼
:
: P.S. C) is 4 times sqrt of 7, over 7, times 5