Answer:
scalene!!!
Step-by-step explanation:
 
        
             
        
        
        
The answer is 13 hope this helps
        
                    
             
        
        
        
Answer:
x = 65.4
Step-by-step explanation:
I solved this question already. My explanation is here: brainly.com/question/20456072
Hope this helped! <3
 
        
             
        
        
        
I hope this helps you 
b (4b+19)
        
             
        
        
        
Answer:
If the committee must consist at least one student, the probability is 99.96%
Step-by-step explanation:
Given;
number of teachers = 5
number of students = 20
Total number of committee members = 25
Possible outcome of all the members in the 4 committee = 25C₄ ways
 = 12650
If the committee must consist at least one student, then the possible outcome;
= Total possible outcome - committee with no student
= 25C₄ ways - 5C₄ ways (all committee members are teachers)
= 12650 - 5
= 12645
The probability that the committee will consist at least one student;
= 12645 / 12650
= 0.9996
= 99.96%
Therefore, if the committee must consist at least one student, the probability is 99.96%