Melody

There is an insert button with a drop down list.

One of the choices is Special Charcters.

The other inequalities are on the second row.   :)

Why anon ?  You need to give an explanation.

The area is given by L*L

so

L*L=5.76

Find length from that formala and then you can find the perimeter.     

Your brackets are not paired properly.

I would use the quadratic formula to solve this  

https://www.youtube.com/watch?v=O8ezDEk

inverse sin is the same as arc sin  SO

on this calc it is just   [2nd] [asin] number

Sorry Geno, My original answer was hidden from your view :)

Twelve trophies are baseball,

eight are football and

five are basketball.

At random what is the probability of pulling one basketball and two baseball trophies from boxes

There are 5 ways of pulling out one basketball

and  12C2 = 66 ways of pulling out 2 baseball ones       $${\left({\frac{{\mathtt{12}}{!}}{{\mathtt{2}}{!}{\mathtt{\,\times\,}}({\mathtt{12}}{\mathtt{\,-\,}}{\mathtt{2}}){!}}}\right)} = {\mathtt{66}}$$ 

Now the total number of ways three trophies can be pulled out is  25C3 =2300

           $${\left({\frac{{\mathtt{25}}{!}}{{\mathtt{3}}{!}{\mathtt{\,\times\,}}({\mathtt{25}}{\mathtt{\,-\,}}{\mathtt{3}}){!}}}\right)} = {\mathtt{2\,300}}$$

So    P(1 basketball and 2 baseball) =   (5*66)/2300    approx   0.14

$${\frac{{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{66}}}{{\mathtt{2\,300}}}} = {\frac{{\mathtt{33}}}{{\mathtt{230}}}} = {\mathtt{0.143\: \!478\: \!260\: \!869\: \!565\: \!2}}$$

Where did I say "same address"  ?

I meant start a new thread but in your initial post give the address of this thread.

Kind of like having book1, book2, book3, etc where on the first page of each book you write down where to find the last book.

So if you ever want to refer back it is easy :)

If you plot it you will see the answer easily.

Think of each point individually.

(I have been asked for more explanation)

Say if have  

3x+5x-18x  these are all like terms so I can add them    (3+5-18)x = -10x

They are like terms because they are all a number followed by the same letter

5x= 5*x = (2+3)x  that would be true too.

6(x+7)-2(x+7) = 6 lots of (x+7) - 2 lots of (x+7) = (6-2) lots of (x-7) = 4(x-7)

3(2y+7)+5(2y+7)+x(2y+7)

each time exactly the same thing is in the bracket so you have 

3 lots of the bracket +5 lots of the bracket + x lots of the bracket.

this is   (3+5+x) lots of the bracket = (8+x)(2y+7)

You will probably need to think about it for a bit