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Ok! Thanks! I completely understand the problem now. Thanks!

those numbers get very big, very fast.

the last digit is the last digit of 1!+2!+3!+4!+5!+6!+7!+8!+9! because all the others end in zero, zero, zero! (Reason: for example, 36! 36x35x34x33x32x31.......x10x9x8.....3x2x1)  I honestly dont know the second it could be anything from 0 to 9. Im soory this awnser is probably not helpful. 

angelthecutehamster out! 

Dont have access

13

Factorials greater than or equal to 10 ends in two zeros, which wont change the outcome

Add 1-9 factorials

1!+2!+3!+4!+5!+6!+7!+8!+9!=409113

I am taking an educated guess and saying 121. I say that caue im saying line x is 1 unit away from ABCD's side and line z is 1 unit away from ABCD's side. And the across lines x, y, and z is 9 and the 2 units away from the sides for lines x and z makes 9+2=11 for the side length and 11x11=121

z = 2x     sub in

5x + 10 + 2x -10 + 2(2x)

11x

If you simplify the question then you will get 11x. 

Z=2x

Write the problem out and then substitute the z for 2x. 

5x +10+z-10+2z

5x + 10+ 2x-10 +4x

The two tens cancel out cause their negative and positive.

5x +2x+4x

Add the the variables 

11x is your answer

tan Ø = .7 / 32.2    Ø= 1.25^o

Um. Your awnser will depend on the variable. If you are counting on the m in E=mc² that has no fixed value. If the varible is five quadrillion then your awnser is five quadrillion and five. If your variable is -40 then your awnser is -35. IT all depends on the variable. So nobody can awnser the question unless you say what 5 is. This might come as a surprise  but to a mathmatitian it is pretty obvious. Don't think I'm going  at you though. Maybe you just put it to see how many people would put a loooooooong awnser like I did. Whatever the reason this is my awnser.

Center of Dilation   = A  =  (  -2, 3)

Call  (x , y)   the point to be dilated

Dilation Rule = ( x + 2, y - 3)

Apply Scale Factor over this  =   ( 4x + 8,  4y  - 12)

Translate  Back  = (  4x + 8 - 2 ,  4y - 12  + 3)  =  (   4x + 6, 4y - 9)

So applying this to C  to get C'  we have

(4(5) + 6 ,  4(-2) - 9 )  =  ( 26, -17)  =  C'

Figure out how far you walk in one minut at 3 miles per hour and figure out how far you walk in a minute at 4 miles per hour and add the 3 miles to itself and the 4 miles to itself and then add how far you go in 1 minute for the three or the four to the three or the four total and repeat until you either pass your friend or catch up to her and if you pass her figure out how far you are from her and subtract that from where you are

I am sorry if this is not helpful. I try my best =>

X = (-4,2)      Y  = (6,0)   Z  =   (-2, -4)

Center of Dilation    =  ( -2,-4)

Call (x , y)  the point to be dilated

Dilation rule =  ( x + 2, y + 4)

Apply the scale Factor  across this  =  ( 3x + 6, 3y+ 4)

Translate  Back  = (  3x + 6  - 2  ,  3y + 4 - 4)  = ( 3x +4, 3y  )

So    working backwards to calculate  A, B  and  C

3x  +  4  =  -4         3y =  2

3x  =  -8                   y = 2/3       So    A =   ( -8/3, 2/3)

x   = -8/3

And

3x +  4 =  6           3y =  0

3x  =  2                    y = 0        So    B =  (2/3, 0)

x = 2/3

And

3x + 4 = -2           3y  =  -4

3x  =  -6                 y =  -4/3     So   C  = ( -2, - 4/3)

x = -2

If we expand it out, we get 4.054054054.....

Setting this equal to x, we have:

1000x = 4054.054054054...

x = 4.054054054...

Subtracting the equations, we get:

999x = 4050

x = 4050/999

x = 450/111

x = 150/37

Uhhh..... you didn't show us the graph......

* * * edit * * *

    it will take you 15 minutes to catch your friend.....who will have been walking for   20 minutes

we can't solve that unless m+5 is equal to something. for example, if m+5=0 then the problem would be m=0-5.

m=-5

but since yor question is just a variable and a number. (a variable of which we don't know the quantity.)

thats why your question will never ever change.

11 C 2 = 55 - Total products of the set.

2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 10, 11, 12, 12, 12, 14, 15, 18, 18, 20, 20, 21, 22, 24, 24, 27, 28, 30, 30, 33, 35, 36, 36, 40, 42, 44, 45, 48, 50, 54, 55, 60, 60, 63, 66, 70, 72, 77, 84, 90, 99, 108, 110, 120, 132)>Total =55 such products.

(2, 4, 6, 6, 8, 10, 10, 12, 12, 12, 14, 18, 18, 20, 20, 22, 24, 24, 28, 30, 30, 36, 36, 40, 42, 44, 48, 50, 54, 60, 60, 66, 70, 72, 84, 90, 108, 110, 120, 132) >>Total = 40 EVEN products out of 55.

Probability = 40 / 55 =8 / 11

1/x   +   2/y =   1/3

( 2x  +  y)  / xy   =  1/3        cross-multiply

3 ( 2x  + y)  =   xy

6x  +  3y   =  xy

6x  =   xy  - 3y

6x  =  y ( x - 3)

y =   6x / ( x  - 3)

x          y

-15       5

-6        -4

-3         3

 1        -3

 2     -12

 4      24

 5     15

 6      12

 9       9

12      8

21      7

thank you very much CPhill for the help

thank you very much CPhill you the man 

Isoceles triangles have two angles =

  it could be two x's    or two   68's

x + x + 68 = 180     x woud be 56^o

68 + 68 + x = 180   x would be 44^o

You need to cover the 1/4 mile head start.....you are walking 1 m/hr faster than your friend    1/4 m  /  1 m/hr = 1/4 hr = 15 minutes to catch