Apacke of cards conatins 4 red and 5 black cards. a hand of 5 cards is drawn without replacment. what is the proablity of all five black. of exactly three black?

Our required probability is 0.3387.

Step-by-step explanation:

Since we have given that

Number of red cards = 4

Number of black cards = 5

Number of cards drawn = 5

We need to find the probability of getting exactly three black cards.

Probability of getting a black card =

Probability of getting a red card =

So, using "Binomial distribution", let X be the number of black cards:

Hence, our required probability is 0.3387.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.