Answer:
12
Step-by-step explanation: Ryan played 12 songs because 9+3=12
 
        
                    
             
        
        
        
Answer:
At the 0.05 level of significance,  the claim made by Blue Diamond is true
Step-by-step explanation:
Given that the Blue Diamond Company advertises that their nut mix contains (by weight) 40% cashews, 15% Brazil nuts, 20% almonds and only 25% peanuts.

(Two tailed chi square test at 5% significance level)
Chi square is calculated as (Obs_exp)^2/Expected
 Cashews	Brazil nuts	Almonds	Peanuts	Total
Observed	5	6	6	3	20
Expected  40%	15%	20%	25%	1
Expected  8	3	4	5	20
      
Chi square	1.125	3	1	0.8	5.925
df = 3
p value = 0.1153
Since p value >0.0 we accept null hypothesis.
 
        
             
        
        
        
The rate of change is the slope of this line
m = (y2 - y1)/(x2 - x1) = (13 - 5)/(4 - 0) = 8/4 = 2
        
             
        
        
        
Answer:
-4y^2+2y+3
Step-by-step explanation:
(2y+1)-4y^2+2
2y+1-4y^2+2
-4y^2+2y+1+2
-4y^2+2y+3
 
        
                    
             
        
        
        
Answer: x=100
Step-by-step explanation:
In parallelograms the opposite angles are equal. As the bottom left angle is 80° the opposite angle (top right), is also 80°. All 4 angles in a quadrilateral must add up to 360. Because you know 2 angles added together are 160° the other two angles must equal 200°. As opposite angles are equal you know 2x=200, divide by 2 x=100