Melody

Is there a question here?

I don't know I was going to try and convert to metric maxims.   

Imperial minims sound even worse!     

It is still k%

k% of  28,000

= $${\frac{{\mathtt{k}}}{{\mathtt{100}}}}{\mathtt{\,\times\,}}{\mathtt{28\,000}}$$

= $${\mathtt{k}}{\mathtt{\,\times\,}}{\mathtt{280}}$$

= $$280k$$      dollars

$$\begin{array}{rll}
V&=&A\times h\\\\
12x^3&=&A\times 3x\\\\
\frac{12x^3}{3x}&=&A\\\\
A&=&\frac{12x^3}{3x}\\\\
A&=&4x^2\\\\

\end{array}$$

PEDMAS, which is        (PEMDAS would be the same thing)

parentheses,

then exponents,

(multiplication, division),   equally important - do from left to right

(addition, subtraction )      equally important - do from left to right

--------------------

In Australia we call it    BODMAS

Brackets

order of  (power of)

the rest is the same.

No I did not know that.  How could I know that when you did not say that?

Anyway.

Here is the same equation in degrees

what value of theta satisfies the equation sin(3theta+5)=cos(4theta+1)?

I have assueed that theta is in radians.

You can see the graph that I have drawn.  Each root - where it crosses the x (theta) axis - is a soution to this equation,

so for any interval of 2pi there will be 8 different answers   

That is   for any interval   $$a\le \theta \le a+2\pi$$     there will be 8 solutions to this equation.

1000*24*365.25   times

I don't know how good and estimation that you need.  Lets see.....

$$\\1000*24*365.25\\
\approx 1000*25*400\\
=1000*\frac{100}{4}*400\\
=1000*100*100\\
=10^3*10^2*10^2\\
=10^{3+2+2}\\
=10^7$$

I will assume this is in degrees.

Cot (65) is a value - it is not a function because there is no variable.  

cot (65) = tan (90-65) = tan (25)

Tan(25) is not a function either.      

This is what I think anyway - one of the other mathematicians might contradict me.    

$$\\66,000,000=6.6\times10^7\\\\
60,000=6\times10^4\\\\
66000000\div60000\\
=(6.6\times10^7)\div (6\times 10^4)\\
=(6.6\div 6)\times(10^7\div 10^4)\\
=1.1\times 10^{7-4}\\
=1.1\times 10^{3}\\$$