Melody

Hi Rosala,

I trust there were no disasters at the wedding :))

Zegroes is back, how about that, you will have to be around more too now :))))

Where is the original thread?         

I already did Zac :)

Yes this conversation is entertaining :)

I would teach permutations when i teach probability.  

I would put it with probability

Yes and 3 goes into 3 once

Thanks MG,

I didn't know that there were dummy books for penguins to learn how to fly.

This is a very useful thing for me to know  

Hi Zac,

Thanks for answering these questions :)

There is a couple of things here.

1) I think it should be       $$10t^2+5t-2=0\qquad (NOT -5t)$$

2) I am not sure what the asker INTENDED the question to be BUT this was the question.

1/2+2/5t-1=1/5t+t

Technically this should be interpreted as

$$\\\frac{1}{2}+\frac{2}{5}t-1=\frac{1}{5}t+t\\\\
\frac{1}{2}+\frac{2t}{5}-1=\frac{1t}{5}+t\qquad $The t is on the top$\\\\
\frac{-1}{2}+\frac{2t}{5}=\frac{6t}{5}\\\\
\frac{-1}{2}=\frac{4t}{5}\\\\
\frac{-1*5}{2*4}=t\\\\
t=\frac{-5}{8}\\\\$$

Also, I would like you to consider putting in some blank lines.  

Sometimes mine is spread out too much, I realize that, but I personally find it a bit hard to read when there are no spaces.  This may just be a peronal preference.  I am not sure :/

Badinage.   Your post is not displaying properly :/

You were right Chris, I had put in an extra zero.

And thanks Badinage.  We both agree that 4 s.f. is best :))