3 years ago

A box contains 500 marbles. The result of 20 marbles pulled at random from the box is given below.

Mathematics

2 answers:

Anni [7]3 years ago

8 0

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

Shalnov [3]3 years ago

3 0

100 black marbles can be pulled

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