ElectricPavlov

Where is the table?

There are 5 marbles total of which 3 are blue so the chance of getting a blue on on the first draw is  3 out of 5 ...   or 3/5      after you draw one marbel out there are 4 left of which 2 are green.   The chance of getting green is thus  2 out of 4 or  2/4

Now the chance of getting   blue then green is   3/5 x 2/4 =   6/20 = 3/10    or   3 out of 10.

The two sides will have the same length.  Pythagorean Theorem says

a^2 + b^2 = c^2    where 'a' and 'b'   are teh sides and 'c' is the hypot.

AND in this case  a=b     so    2a^2 = 5^2

a^2 = 25/2

a^2 = 12.5

a = sqrt12.5 = 3.54   

Quadratic Formula:    For this equation   a = 15  b = -4  and  c = -68

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

x = (4 +- sqrt(16-(-4080) ) /   30

 = (4+-64)  /30     =   2.2667    or    -2

Complete the square

15x^2-4x-68    = 0     divide by 15

x^2 - 4/15x  - 4.5333... = 0

x^2 - 4/15x     = 4.53333....     now take 1/2 of the 'x' coefficient, square that and add it to both sides

x^2 - 4/15x + 4/225 = 4.53333... + 4/225   and this equals:

(x-2/15) ^2   =  4.55111     Now take the square root of both sides

x-2/15   =  +-  2.1333        so x=

x=    2/15 +-2.13333   =  2.2667      - 1.999999 (~ - 2)      Same answers as above

Factoring ...ya just gotta practice at these

(15x -34)(x+2) = 0         results in x = -2  or  34/15 = 2.2667    Same answers as above

I'm not sure how to put a graph in this answer, but if you graph the original equation, you will see a parabola that crosses the x-axis at -2 and 2.2667      (this web calc can graph it for you 

Fdegrees= 9/5 Cdegrees + 32    Subtract 32 from both sides of the equation

F-32 = 9/5 C          Multiply both sides by 5/9

5/9 (F-32) = C

In the display of the calculator ....on the far right is a group of faded grey lines....click on that (menu) and pick "factions"   under input helpers.......Maybe that will help you ....

What kind of problems are you having with the website???    Just complaining about it does nobody any good and gives no problem to perhaps be addressed to improve the situation ! 

Hmmmm... What graph?   Haha    Anyway sin (6radians)    = -.279     sin (6pi radians) = 0

Per YEAR

Costs  are   200 (52) + 52 + 200/500 x  = 1.10 x    where 'x' = number of Ice Cream bars

10452 +2/5x = 1.1x

10452 = .7x

x= 14931.43 Ice Cream bas each YEAR    Divide by 52 weeks/yr = 287 Bars each WEEK