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I suspect this is all that is being asked for:

.

Should be 4cm.

1)  Permutation of 9 items, 5 at a time:  ₉P₅  =  9! / 4!  =  9x8x7x6x 5  =  15120.

2)  If order is important:  ₂₆P₅          (If you want just a set, order isn't important.)

     If order is not important:  ₂₆C₅

sec(2x)  =  2   --->   2x  =  sec^-1(2)   --->   x  =  sec^-1(2) / 2   --->   x  =  60°  or 300°  

   (plus/minus whole number multiples of 360° and )

This problem can be changed into a cos problem:  sec(2x)  =  2   --->   cos(2x)  =  1/2    

--->   2x  =  cos^-1(1/2)   --->   x  =  cos^-1(1/2)  / 2   --->   x  =  60°  or 300°      

   (plus/minus whole number multiples of 360°)

Pattern for 10¹⁰, 9¹¹, 8¹², ...   Pattern could be: decrease the base by 1, increase the exponent by 1 ...

To get to 0 will take 11 terms; the 11^th term is 0²⁰.

Pattern for 100, 99, 96, ...  Pattern could be: decrease by 2 more than the previous decrease ...

--->   100, 99, 96, 91, 84, ...  Find the 11^th term ...

Or, did you mean the pattern 100 98, 96, ... ?

Australia is in the southern hemisphere so it's on the left. In the northern hemisphere it's on the right. hahaha  

e^πi  =  -1

If you want to remove 8% from x, find 0.92 · x.

You use 0.92 because 100% - 8%  =  1.00 - 0.08  =  0.92.

Example:  Reduce $175.00 by 8%   --->   $175.00 x 0.92  =  $161.00.

LOL

To get away from KFC's

sin(41)  =  12/y   --->   sin(41)·y  =  12   --->   y  =  12 / sin(41)   --->  (calculator time!)

CBA button

LOL

BCD and AEFG     I am assuming that the BCD must stay together in that order.

The aefg can be in any order so there are  4! permutations there.

Now for each of those permutations BCD can be before or after the first, or before or after the last or in the middle that is 5 different positions.

So the answer is    4!*5

$${\mathtt{4}}{!}{\mathtt{\,\times\,}}{\mathtt{5}} = {\mathtt{120}}$$

i think we've got the calculator for this!

haha! yea

i stay up so late all the time lol

$$\\2*10^3+9*10^2+3*10^0\\\\
=2000+900+3\\\\
=2903$$

What multiplied by itself equals 64?  

Yes it is :))))

divide both sides by 3

then take the square root of both sides. 

remember the answer can be positive or negative. There will be 2 answers.

9,930 is the answer

poor TJM,,,....better be carefull with jokes next time...or maybe just,.......melody!

hello kitty!i really missed you!

you don't have to do anything with the "3". just solve for x.

@@ End of Day Wrap   Mon 2/3/15    Sydney, Australia     Time 10:20 pm     ♪ ♫

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Our marvelous helpers today were Nauseated, Saseflower, CPhill, TheJonymyster, Tetration and Mihail.  Thank you  

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