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By the Cosine Law, B = 75 degrees.

I thought it was 5/13 because there are 13 cards in a suit and 5 of them are even, the face cards don't count.

Yea, IKR, a lot of times, guests answer my questioon wrong. 

IDK, in the U.S, idk.

I know, I would really like seeing this get done, although I'm not answering it, or I'm here because I

m doing it. 

It's because baceria drinks milk and p***s ut air while making cheese. 

8/125 = 12/x

2/125 = 3/x

x/3 = 125/2

x = 187.5

No you

Plug everything in. 

          f(x)         -     g(x)     +      h(x)

(2x^2 + 3x - 9) - (5x + 11) + (-3x^2 + 1)

=^._.^=

Haha  (btw I'm another guest chillin in this forum) 

Maybe

so they can breathe?

That is a good question.

Air bubbles maybe?  

I am sure if you google it you will get several answers. Maybe then you can tell us. 

Thanks Textot, you are right. 

Sorry for contradicting you Jeager.

I muddled up exterior angle with external angle.

No maybe I got it. I would be a problem if I I associate at the same triangle two different perimeters, and this is impossible; my mistake.

I have thrown my working out but that sounds likely.  Good work.

hey sorry thats wrong

No you 

OK, young person! Here is my attempt at this:

Here are ALL 3-digit numbers in base 5, which are 2-digit numbers in base 8:

100, 101, 102, 103, 104, 110, 111, 112, 113, 114, 120, 121, 122, 123, 124, 130, 131, 132, 133, 134, 140, 141, 142, 143, 144. If you count them you should get 25 such numbers. And their average is: [100 + 144] /2 = 122 in base 5, which is the exact median of the above list. Converting [100 + 144] / 2 =122  from base 5 to base 10, you get: [25 + 49] / 2 =37 in base 10.