Answer:
Mean:
a) 4 
b) 2
c) 2 
d) 2
Median:
a) 4,2
b) 5,2
c) 5,1
d) 4,1
Mode:
a) 1
b) 1
c) 1
d) 1
Step-by-step explanation:
Mean: 
a) 1+4+2+1 = 8/4=4
b)1+5+2+1 = 9/4= 2.25 (round to the nearest whole number = 2)
c) 1+5+1+0 = 7/4 = 1.75 (round to the nearest whole number = 2)
d) 1+4+1+0 = 6/4 = 1.5 (round to the nearest whole number = 2)
 
        
             
        
        
        
The answer to your question Meowgatita15, is D. 
        
             
        
        
        
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 , then
sin²x = 1 - cos²x and cos²x = 1 - sin²x
Consider the left side
 ← expand numerator/denominator using FOIL
 ← expand numerator/denominator using FOIL
=  
 
= 
= 
= 
= cot²A = right side , thus proven
 
        
             
        
        
        
Answer 2. You just have to find wants similar and put it out front and then leave wants left in parentheses
        
                    
             
        
        
        
Answer:
Let A equal the first number 
Let B equal the second number 
A=4b+6
B=b
4b+6+b=156
Step-by-step explanation:
Hope this helps :) Have a great day!!!!