Answer:
-3±√89/10
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The probability that each player will receive three picture cards = 0.0324
Step-by-step explanation:
As given,
A deck of 52 cards contains 12 picture cards
Remaining card = 52 - 12 = 40
So,
Total number of ways in which 12 picture card is distributed = 
Now,
The Total number of ways in which Remaining cards are distributed = 
So,
Total number of ways of getting 3 picture card and remaining card =  ×
×  
 
 = 
Now,
Total number of ways to distribute 52 cards so that each people get 13 card = 
∴ The probability = 
                             =  ×
×
                            =  ×
×
                            =  ×
×
                            =  ×
×
                            = 0.0324
∴ we get
The probability that each player will receive three picture cards = 0.0324
 
        
             
        
        
        
Answer:
Its A i just took the test
Step-by-step explanation:
 
        
             
        
        
        
So we are starting out with 30 messages.
If 1/5 of the messages Lily receives are picture messages, then take 1/5 x 30 to find out how many that is.
1/5 x 30 = 30/5 = 6. So Lily receives 6 picture messages. 
If 7/8 of the remaining messages are texts, then we need to find the number of remaining messages. If 6 are pictures and she receives 30 overall, then 30 - 6 = 24, the remaining number of messages. Since we know 7/8 of <em>this </em>number is the number of texts Lily received, let's do some more multiplication:
7/8 x 24 = (7 x 24)/8 = 168/8 = 21.
So Lily received 21 text messages, 6 picture messages, and 3 of something else!
        
             
        
        
        
You will not invited
Mean is best measure of average.
Given:
Class rank is at least = 90th percentile 
Rank 30 out of 128 student  
Find:
1. Invited for membership or not
2. Best measure of average
Computation:
Rank in total = [(100 - Percentile)(Total students)]/100  
30 = [(100 - Percentile)(128)]/100
3000 = [(100 - Percentile)(128)]
23.4375 = 100 - Percentile
Percentile = 100 - 23.4375
Percentile = 76.5625  
Since Percentile smaller than 90, So, you will not invited to membership
Mean is best measure of average.
Learn more:
brainly.com/question/6033034?referrer=searchResults