Answer: Your answer should be {x,y}={3,−3}
Step-by-step explanation: Hoped this helped!!!!
 
        
             
        
        
        
Answer:
4 tens
Step-by-step explanation:
3 tens would get you $30, which is $7.80 short. If you give 4 tens you are giving $40 which is 2.20 more than $37.80, which is okay as you can probably get change and it is the least amount of tens you can give to cover the cost.
 
        
             
        
        
        
Answer:
I believe its C?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x  =  4
Step-by-step explanation:
Find 8 on the y-axis.  Draw a horizontal line through y =8.  Determine the x value for which the graph intersects this horizontal line y = 8.  It is x = 4
 
        
                    
             
        
        
        
F(x,n,p)=C(n,x)p^x*(1-p)^(n-x)
n=9, p=0.8  =>
f(x,9,0.8)=C(9,x)0.8^x*(0.2)^(9-x)
The function f(x,9,0.8) is then calculated using the above formula
x f(x)
0 0.0000001 0.0000182 0.0002953 0.0027534 0.0165155 0.0660606 0.1761617 0.3019908 0.3019909 0.134218
Check Sum f(x), [x=0,9] = 1.0   ok