Melody

Maybe press = twice

that usually works :/

It is 7*(3/1) = 21

Nice one Chris :)

Here are some possible suggestions.  I hauled the addresses out of our reference material sticky topic :)

z score probabilities - this is great

$$300\sqrt3$$

this is an irrational number and it cannot be further simplified. 

However, if you want to estrimat it you can put it into the web2 calc like this

300*sqrt(3)

$$\\(8\sqrt{3})^2=64*3=192\\\\
OR\\\\
8*(\sqrt3)^2=8*3=24$$

- 5 (a+6)

=-5*a + -5*6

=  -5a  -  30

Hi siera,  it has been nice seeing you on the forum :)

You question is open to different interpretaions.

A)

I would let y = the number of early deliveries and x be the number of standard customers (orders)

$$y=320+\frac{3x}{20}$$

B)

More y means more ealy deliveries, this would happen if there were more standard cutomer (orders)

C)

y= kx               where k can be any number greater that     $${\frac{{\mathtt{3}}}{{\mathtt{20}}}}$$

the slope for this line would be steeper than the other one because the gradient is bigger.

exactly the same as you wrote it here. :/

(3/4-2/3)+(1/2+1/3)=

$$\left({\frac{{\mathtt{3}}}{{\mathtt{4}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{2}}}{{\mathtt{3}}}}\right){\mathtt{\,\small\textbf+\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right) = {\frac{{\mathtt{11}}}{{\mathtt{12}}}} = {\mathtt{0.916\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

Great work MG.

You final answer can be changed into a mixed numeral. :)

It was really good to see you try LaTex but if you are going to use the / sign you must use brackets.

You have written

2*5/4*5+3*4/4*5

simplified this means

$$\\=\frac{2*5}{4}*5+\frac{3*4}{4}*5\\\\
=\frac{2*5}{4}*\frac{5}{1}+\frac{3*4}{4}*\frac{5}{1}\\\\
=\frac{2*5*5}{4}+\frac{3*4*5}{4}\\\\
=\frac{50}{4}+\frac{60}{4}\\\\
=\frac{110}{4}\\\\
=\frac{55}{2}\\\\
=27\frac{1}{2}$$

THIS IS OBVIOUSLY NOT WHAT YOU INTENDED

So this is how you needed to write it

(2*5)/(4*5)+(3*4)/(4*5)

which really does mean

$$\frac{2*5}{4*5}+\frac{3*4}{4*5}$$

This was my LaTex coding for these fractions. :)

\frac{2*5}{4*5}+\frac{3*4}{4*5}

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

Here is some more - only do them if you want to.  :)

Hint:  Don't make a big deal out of these - they are quite simple.

$$\\1)\;\; 6-\frac{2}{3}\\\\
2) \;\;12-3\frac{5}{9}\\\\$$