Melody

type in 

sin(5/4*pi)  on the home page calculator. (you many need to press enter on your keyboard at the end)

Make sure the radians button is chosen at the bottom left of calc first.

It gives you a whole new set of functions that you can choose from. Take a look!  Just about all calculators have a button like this one.

This is not a question

translation:

The 2-3 p-7

Zegroes, have another go.  

You have changed the position of the brackets.  Just copy and paste.

You might need to use [ctrl] [v] to paste.

change the 'of' to an * sign.  Everything else stays the same!

You should get the same answer as Chris. No you shouldn't!

Chris,

You made a mistake it is 2*3 not 2^3  (6 not 8)

In Australian slang, 'mate' just means 'good friend' It is usually only used when referring to males. (although there are exceptions.) 

eg Jim and his mates are at the golf course. This would be a normal sentence in Australia. It would be fairly universally used by both high and low status people.

The female equivalent might be Donna and the girls have gone out. (Used for all ages)

I suppose if said my son and his partner (the partner is a girl) had their mates over to watch sports, then 'the mates' could  be male and female. 

x+6

or

a+6

or

n+6

or

etc

the number could be represented by any pronumeral (letter)

A very good answer zegroes - that's what I want to see 

Keep it up and the Dinosaur will have to become vegetarian! (Or maybe just find other prey hehe)

You could be right Takahiro

That is probably the best guess so far!

Deleted

Sorry I didn't notice the 'h'.