Answer:
there are 6 different ways they will not be next to each other
Answer:
Step-by-step explanation:
you have a total of 5+7+4=16 marbles in the box.
5 are red
7 are white
4 are green
If you randomly select 1 marble out of the box, the probabilities are:
5/16 chance of being red
7/16 chance of being white
4/16 chance of being green
Set up:
6/(y - 4) - y/(y + 2) = (6/y - 4)(y/y + 2)
Take it from here. Solve for y.
There is no solution.
To solve it using the substitution method, substitute y from the y = 3x - 4 equation into the 9x - 3y = 14 equation, like so:
9x - 3(3x - 4) = 14
Then after foiling:
9x - 9x -12 = 14
Since there are two x's on the same side, we can just cancel them out leaving:
-12 = 14
Since -12 most definitely does not equal 14, the equation has no solution.
I used this website as a reference: http://www.purplemath.com/modules/systlin4.htm. If it doesn't make sense then you can find some other examples on there that may help you. I hope this helps.