Two worlds have 1 million birds each. world 1 has 100 black ravens and the rest are other birds. world 2 has 1000 black ravens, 1 white raven and the rest are other birds. you enter a randomly picked world.
(a) what are the chances that all ravens are black in your world?
(b) you see a random bird and it’s a black raven. now, what are the chances that all ravens are black in your world?

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

what are you trying find out?

step-by-step explanation:

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus