Question

A bag contains 9 black marbles and 1 white marble.

What is the probability of the event that is complementary to the event of drawing a black marble from the bag?










A.
1/10




B.
1/9














C.
8/9













D.
9/10

Answer 1

@jim_thompson5910

Answer 2

What is the probability of drawing a black marble from the bag?

Answer 3

It doesn't say :(

Answer 4

how many black marbles are there?

Answer 5

9 black and 1 white

Answer 6

so 9 black out of 10 total

the probability of drawing a black marble is ???

Answer 7

9/10 thanks your very smart :)

Answer 8

that's not the answer though

Answer 9

it helps you get there

Answer 10

they want the probability of the complementary event

Answer 11

lol well ok what is the next step

Answer 12

remember, two complementary events have probabilities that add to 1

Answer 13

im back confused now.....

Answer 14

P(Black) means "the probability of drawing a black marble

P(White) means "the probability of drawing a white marble

Answer 15

So P(Black) + P(White) = 1

Answer 16

so is it A Or B

Answer 17

What was P(Black)

Answer 18

Is it B?