CPhill

To correct my earlier error :

(89.000 -3.000) - [(5.000 x2.000) / (3.000 x 3.000)] - 5.000 x 3.000  =

(86)   - (10/9) -  15   =

71   - 10/9    =

71  - 9/9  - 1/9  =

71  - 1    -  1/9  =

70 - 1/9   =

69 + 8/9

2x - 3      -    2x + 1

____            _____        =   

   18                 6 

2x  - 3    -      6x  + 3

_____          _______   =

  18                 18

[ 2x  - 3    - 6x   -3 ]

_______________         =

           18

-4x  - 6

_______    =

   18

-2x - 3

_____      

    9

(89.000 -3.000) - [(5.000 x2.000) / (3.000 x 3.000)] - 5.000 x 3.000  =

(86)   - (10/9) -  15   =

71   - 10/9    =

71  - 9/9  - 1/9  =

71  - 1    -  1/9  =

70 - 1/9   =

69 + 1/9

Guest is correct.......this could have many solutions........we need to know how many tickets were sold to give an exact answer......

-ab +  ab  = 0       .....this is the additive inverse property

I'm assuming that by "length,"  you mean "perimeter".......if so....one side is just (1/4)  of this =

(1/4) [ 8m + 64]   =  2m + 16

20+10+0+(-10)+(-20)+(-40)+(-20)+(-10)+10+(-10)

30 +  (-30) + (-70) + 0  =

0  +  (-70)   + 0    =

-70

To correct an earlier error  :

(x + 1) ^2   +  ( y + 2)^2  =  4

There are 60 minutes in every degree......so.....

In  .8   of a degree there are   .8 x 60  = 48 minutes

So     17.8°    =   17 degrees, 48 minutes

We can solve this equation  [ assuming yearly compounding ]

P + 1800   =   P (1 +  .08)^8    where P is the amount  originally invested

Rearrange as

1800  = P [ (1 + .08)^8  - 1]      divide both sides by [ (1 + .08)^8  - 1]

1800 / [ (1 + .08)^8  - 1]    =   P   =  about  $2115.38