Answer:
5/6
Step-by-step explanation:
9/30 + 16/30 = 25/30 = 5/6
Yes, because there is no other way to be more simpler
Yes, both fractions are equal.
Answer:
100 black marbles
Step-by-step explanation:
The experimental probability of a black marble is
P(black) = 4/20 = 1/5
We expect that out of the 500 marbles in the box, 1/5 of them are black
1/5 (500) = 100
There should be 100 black marbles
