Question

A bag contains 14 gray 7 black and 10 white marbles. A marble is drawn at random what is the thecorical probability as a decimal of drawing a black marble round the decimal to the nearest hundredreth

Answer 1

Answer:

The theoretical probability to draw a black marble is 0.23.

Step-by-step explanation:

First add up the total amount of marbles in the bag.

14 gray marbles + 7 black marbles + 10 white marbles = 31 total marbles.

Since we need the odds of a black marble being drawn, divide 7 (the amount of black marbles) by 31 (the amount of total marbles).

7/31 ---> 0.22580645161   (it is easiest to use a calculator on this step)

Lastly, round the decimal to the nearest hundredth.

0.22580645161 ---> 0.23

0.23 would be the odds of drawing a black marble.