Answer:
<em>~ 5/6 </em>~
Step-by-step explanation:
3 green (1/2)
3 red (1/2)
Total is 6
The first time is 1/2 green.
The second time, since we took one away without putting it back, 1/3 green.
Then, you have to add them together.
Change them first, though.
1/2 changes to 3/6.
1/3 changes to 2/6.
3/6 + 2/6 = 5/6
We can not simplify it, so 5/6 is the end result.
56/3
6x-54=3x+2
3x-54=2
3x=56
x=56/3
9x⁴ – 2x² – 7 = 0
Let's say that u = x²:
9u² – 2u – 7 = 0
Factor:
(u – 1) (9u + 7) = 0
u = 1, -7/9
Since u = x²:
x² = 1, -7/9
x = ±1, ±i √(7/9)
I believe it's $1.50
