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Now you have.

Also i was wondering what these points represent i know its a positive thing but does it add onto your account or anything. 

65% =  65 / 100 =  [13 * 5 ] / [20 * 5 ]  =  13 / 20

Maybe Google removed them.........

Type in  "3 - 3 "

Because 6 divides both 6 and 12, MG1......

Try typing                 tilt

How come you two have got points here and I haven't?  ;/

Let n be the number ... so....

n + 18  = 3n - 8      add 8 to both sides......subtract n from both sides

26  = 2n                  divide both sides by 2

13 = n

How did know to factories it or not?

That is so true! XD

Yep......

So, didn't you factories (6x-12) to 6(x-2)

You have too much free time on your hands, Melody.....

LOL!!!!

Thanks CPhill and Melody.

I will remember the brackets :)

The molar mass of arsenic =  74.92160 g/mol

To calculate moles, we have

grams of substance / moles of substance =  74.92160 g/mol 

3.65x10^-3 g  / moles of substance =   74.92160 g/mol 

moles of substance = 3.65x10^-3 g/  74.92160 g/mo =

0.0000487175927903 moles =

about  4.87 x 10^(-5) moles

@@ End of Day Wrap   Mon 30/3/15   Sydney, Australia   Time 1:50 am (Really Tues)  ♪ ♫

Good morning/evening/day/whatever.   :)

Our fabulous answerers today were CPhill, Nauseated, Gibsonj338, Geno3141, Alan, Bertie, Melancholy, Heureka and MathsGod1.    Thanks all :)

Some of us are even learning to count.  Don't get it?  Don't worry - it is an inside joke :)

Interest Posts:

FTJ means "For the Juniors"

Tues 31/3/15

FTJ means  "For the Juniors"

Yes good work MG - don't forget those brackets, they are really important :)

I think that the first t is supposed to be squared

$$\\h(t)= -4.9t^2 +28t+2\\
h'(t)= -9.8t +28\\
$max height attained at the turning point ie when $\;\;h'(t)=0\\
-9.8t+28=0\\
-9.8t=-28\\
t=28/9.8\\
t\approx 2.857\;seconds\\$$

$${\mathtt{\,-\,}}{\mathtt{4.9}}{\mathtt{\,\times\,}}{{\mathtt{2.857}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{28}}{\mathtt{\,\times\,}}{\mathtt{2.857}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}} = {\mathtt{41.999\: \!999\: \!9}}$$

Maximum height is approx 42 metres  :)

(2 cos θ)^2  =

4 cos^2 θ =

4 (1 - sin^2 θ ) =

4 ( 1 + sin θ) (1 - sin θ)  

Other forms are also possible........ !!!

(((1.45-1)*(100/1.45))-((100-(100/1.45))))/(1.45-1)  simplify

[(.45)*(100/1.45) - 100 + (100/1.45)] / .45 =

[(45/1.45) - 100 + (100/1.45)] / .45 =  

[multiply the top and bottom of both fractions in the numerator by 20]

[900/29 -  100 + 2000/29] / .45 =

[ 2900/29 - 100] / .45  =

[100 - 100] / .45 =

0 / .45 = 

0

And there you go....

BTW......this isn't an "equation"..it's just an "expression"....

Well....we couldn't POSSIBLY be wrong about a "counting" problem.....could we???

LOL !!!!!!

How many ways are there to put 4 indistinguishable b***s into 2 distinguishable boxes?

4,0

0,4

3,1

1,3

2,2

That is it 5 ways

Another great answer

Thanks......!!!

Yes - I agree :)