Melody

a circle has a radius of 6 and centre (-2,1). write down the equation of the circle

$$(x+2)^2+(y-1)^2=36$$

look under formulary at the top of the page :)

SO

The geometric mean of 7,6,8 and 2

is it   $$\sqrt[4]{7*6*8*2}$$

$${\left({\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\mathtt{8}}{\mathtt{\,\times\,}}{\mathtt{2}}\right)}^{\left({\mathtt{0.25}}\right)} = {\mathtt{5.091\: \!459\: \!790\: \!043\: \!661}}$$

what happen if there is negative numbers?

I expect that you mean

(3 x 10^-2) / (12 x 10^4)

$$\\3/12 * 10^{-2-4}\\
=0.25*10^{-6}\\
=2.5*10^{-1}*10^{-6}\\
=2.5*10^{-7}$$

$$\\If x=2,\;\; y= -1\;\; and\;\; z=3 \\\\
$find the value of the following: $\\\\
\frac{1}{3}x^2y+\frac{5}{6}y^2z^3-2y\\\\
=\frac{1}{3}*2^2(-1)+\frac{5}{6}(-1)^2*3^3-2(-1)\\\\
=\frac{1}{3}*4*(-1)+\frac{5}{6}*27+2)\\\\
=\frac{-4}{3}+\frac{5}{2}*9+2\\\\
=\frac{-4}{3}+\frac{45}{2}+2\\\\
=\frac{2}{3}+\frac{45}{2}\\\\
=22+\frac{2}{3}+\frac{1}{2}\\\\
=22+\frac{4}{6}+\frac{3}{6}\\\\
=22+\frac{7}{6}\\\\
=23\frac{1}{6}\\$$

I can't see how the 1/5 is relevant  

1/12 were absent and 11/12 were at school

so 

$$\\\frac{11}{12}X=704\\\\
X=704\times\frac{12}{11}$$

$${\mathtt{704}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{12}}}{{\mathtt{11}}}}\right) = {\mathtt{768}}$$

there are 768 students in the school.

NOTE: Alan has interpreted it differently from me.  

I hope you feel better soon Baba,

You don't need to worry about Nauseated. 

Did you know that he is a capybara.  He is just a giant rodent that cannot even digest meat.  He's a would be if he could be kind a critter. He is never going to eat you because he'd get too sick.  Capybaras are slow and stupid, but not THAT stupid.

Look here he is, with a few of his friends.  Do you really think that you need to be wary of him?

Nauseated with his friends

Thanks Alan, the pic should help a lot :))

Can't you ever be polite Nauseated.  

Don't let him worry you Sorasyn, Nauseated calls himself Nauseated because he is always Nauseating!

Hey Chris, how come you got 3 points for an empty answer??   LOL

I want some of those too.