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Since you have a 1.5 in margin on both the left and the right, the center portion will be 10 - 1.5·2 = 7 inches wide.

With those margins on the top and the bottom, the center portion will be 12 - 1.5·2 = 9 inches tall.

The center portion has an area of 7 x 9 = 63 square inches.

The whole page has an area of 10 x 12 = 120 square inches.

Subtracting, we find that the margins have an area of 120 - 63 = 57 square inches.

The fraction of the page taken up by the margins is 57 / 120 = 19/40.

I see you’ve given my post thumbs-down, and you’ve given your posts thumbs-up. I see also that you generated over a 1000 points in the past week. That is close to a record on here. Most of it is from the irritating bullshitt you’ve posted. Is that why you make those posts –to generate points?

I’ll be correcting that excess very soon....   

Assuming that an ace is 1 and a king is 13:

The smallest sum you can get is a 1 on a die and a 1 for an ace for a sum of 2

The largest sum you can get is a 6 on a die and a 13 for a king for a sum of 19.

You can get every sum between these two limits.

Ok, you read it wrong. Fine, that happens. But why do you feel the need to comment on so many posts by CPhill and Geno?  Excessive compliments lose their meaning, and quickly become very irritating –to the poster and to the rest of us who read them. Lighten up!!!!!!   

I'm going to use "crt" to represent the cube root.

Also, I'm going to use this formula:  (a - b)³  =  a³ - 3a²b + 3ab² - b³

y  =  [ x - ( crt(2) + crt(4) ]³

   =  x³ - 3·x²·( crt(2) + crt(4) ) + 3·x·( crt(2) + crt(4) )² - ( crt(2) + crt(4) )³

   =  x³ - 3·crt(2)·x² - 3·crt(4)·x² + 3·crt(4)·x + 12·x + 6·crt(2)·x - 6 - 6·crt(2) - 6·crt(4) 

"If you could have a superpower what would it be?"

Be careful for what you wish! That superpower may ruin your life and make your life miserable in ways you can never imagine! Try some thought experiments and imagine what would happen with your super power. Can you keep it secret? How would you deal with the media? How would you deal with the SOCIAL media?

"If you could be an animal what would it be?"

Once again, be careful for what you wish. You never could imagine the horrible things that can happen to you as an animal. If you were to retain your human intelligence, how would you deal with all that attention?

But of course. I would probably have the power to control time only after I do ten pushups. The reason why ten pushups is because I would rather put the trigger on a physical action than a mental one. An accidental or not thoughtful will to travel through time can lead to accidents or unwanted events.

I'd stay human. I like being the most developed creature on earth :)

HEHEHEHEHE    !!!!

You  gotta' be quick on the draw around here ........LOL!!!!!

sec (3x)  =    -2√3 / 3   =   -2 / √3

Note  that if this is the  sec(3x)  then  cos (3x)   must be    - √3/2

But  cos (x)  =  - √3/2      at        5pi/6,     7pi/6 ,  17pi/6, 19pi/6,  29pi/ 6, 31pi/ 6

Dividing each  by  3  we  get  the solutions

5pi/18, 7pi/18, 17pi/ 18 , 19pi/18, 29pi/ 18, 31pi/ 18

The answer is 9 different sums. Hope it helped a bit!

Yes, correct!

Nice, both of you!

I NEVER give a thumbs down...unless it is a very inappropriate comment. all answers should be appreciated :D

NO! You beat me to it! LOL

We have  6 x 6   =36 possible  outcomes

Note that

Sum      Frequency

  2             1

  3             2

  4             3

  5             4

  6             5 

  7             6

  8             5 

....

 12            1          

So....the probability   =   5  / 36

In trapezoid ABCD, sides AB and CD are parallel, angle A = angle D, and angle C = 3 times angle B. Find angle B.

Trapezoid ABCD is the right trapezoid because its two angles are the right angles.

∠A = ∠D = 90°

∠B : ∠C =  1 : 3

∠B = 1/4 * 180° = 45°

∠C = 3/4 * 180° = 135°   

39 because the square of 400 is 20, so we have to be consecutive, so 20+19=39

We could  do some math here....but  note that   (20) (20)  = 400    and   (-20)(-20)  = 400

This  must   imply  that

(19)(20)  < 400    and

(-20) (-19)  < 400

So  the  sum  is either  39  or  -39

39  is the one we need