It is easier to understand the problem if you create a number based on the criteria and then perform the computations. I am going to choose: 111 22 33 4
There are 10 options for the first "1" and only 1 option for the other two 1's
There are 9 remaining options for the first "2" and only 1 option for the other 2
There are 8 remaining options for the first "3" and only 1 option for the other 3
There are 7 remaining options for the "4"
10 x 1 x 1    x      9 x 1     x      8 x 1      x      7
10 x 9 x 8 x 7 = 5,040
Answer: 5,040 
 
        
             
        
        
        
<span>7 is divisible by 7 and not by 14. </span>
        
             
        
        
        
Answer:
h=A/b
Step-by-step explanation:
Think of putting number in the place of the letter, for example
A is 4
b is 2
h is 2
4=2 x 2        then plug the numbers in the right spot
2=4/2           then see what can be rearranged or what is left to make the              
                      equation true
 
        
             
        
        
        
Step-by-step explanation:
mean = sum of observation/ no. of observation 
mean = 3+5+6+4+7+3+9+8/ 8
<h2>mean = 45/8 = 5.6</h2>
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
the end of interval is t=2
v=s'= -3t^2+4t-2
v(2)= -3(2^2)+4(2) -2
v(2)=-12+8-2
v(2)= -6m/s
so tje ans is A