OpenStudy (anonymous):

c=?

OpenStudy (anonymous):

Depends on the context. In physics it's speed of light.\[2.9979\frac{m}{s^2}\]

OpenStudy (anonymous):

Err. Missing the 10^8

OpenStudy (anonymous):

Big difference there ;)

OpenStudy (angela210793):

lol yea :D

OpenStudy (anonymous):

And that's m/s not m/s^2. I need coffee.

OpenStudy (anonymous):

Wrong, speed of a light in a vacuum.

OpenStudy (anonymous):

\[4+\sqrt{16 - 4* -1* c} --------------------- =-5 2*-1

OpenStudy (anonymous):

Not so much wrong as not completely right :) On to the actual problem.

OpenStudy (anonymous):

C=5. Give me a minute to show the work.

OpenStudy (anonymous):

alright!

OpenStudy (anonymous):

\[\frac{4+\sqrt{16-4(-1)(c)}}{2(-1)}=-5\] Times each side by -2: \[4+\sqrt{16+4c}=10\] \[\sqrt{16+4c}=6\] Square both sides: \[16+4c=36\] \[4c=20\] \[c=5\]

OpenStudy (across):

For a moment I thought we'd start up on a discussion about relativity and space-time fabric. :P