![deena7](/avatars/35676.jpg)
deena7
03.10.2019 •
Mathematics
Two cards are drawn from a regular deck of 52 cards, without replacement. what is the probability that the first card is an ace of clubs and the second is black?
Solved
Show answers
More tips
- C Computers and Internet Protect Your Computer: How to Set a Password on Your Device...
- W Work and Career How to behave at an interview? Tips from an HR specialist...
- F Family and Home How to Keep Your Home Warm: Tips and Tricks...
- D Dating, Love, Relationships Does a Person s Character Depend on the Color of Their Eyes?...
- O Other Childhood Fears: What Many of Us Experienced...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
Answers on questions: Mathematics
- M Mathematics Please answer #11,#15,and #16.For #11, determine if the graph represents a function.For #15-16 find the domain and range of the function represented by the graph....
- M Mathematics If f(x) is an exponential function where f(x) is an exponential function where f(3.5)=20, then find the value of f(4), to the nearest hundredth....
- M Mathematics Hello could you help me please?...
- P Physics You should have observed that there are some frequencies where the output is stronger than the input. Discuss how that is even possible from a conservation of energy standpoint....
- E English What are two effects that Wright notices are caused by his hunger in the autobiography What is Worth Fighting For?...
Ответ:
There is only 1 ace of clubs and it is black, so the first probability is 1/52. One ace of clubs out of 52 total cards.
Next, you keep the first pick and want a black card second. You subtract the one card you took from the total deck, leaving you with 51. (btw With replacement, you would simply keep the total as 52) There are 26 red cards and 26 black cards in a deck. It would be 26/52, but since the ace of clubs is black, it is 25/51.
Finally, you multiply both probabilities to get the overall probability (lol weird way of saying that, but I hope you get what I mean).
Wanted/Total
Ответ:
cross multiply
(2x)(14) = (7)(12)
28x = 84
x = 84/28
x = 3
3 / (x - 1) = 5/7
cross multiply
5(x-1) = (7)(3)
5x - 5 = 21
5x = 21 + 5
5x = 26
x = 26/5 or 5.2