Answer:
D. domain: (-infinity, infinity); range: [1, infinity)
Step-by-step explanation:
The domain is the values that x can take
The domain is (-infinity, infinity)
The range is the values that y can take
absolute value is 0 or greater 
cos x is from -1 to 1
The minimum value is when x=0
The smallest value is 1 and the largest is infinity
 
        
             
        
        
        
Answer: 
A. False 
B. True 
C. True 
D.True 
Step-by-step explanation:
A. False . The significance level or alpha is the probability of rejecting the null hypothesis when it is true. For example, a significance level of 0.05 indicates a 5% risk of concluding that a difference exists when there is no actual difference. 0.01 alpha is better than 0.05 alpha . 0.01 indicate a 1% risk of rejecting the null hypothesis when it is true . 
B. True . If the p-value is less than alpha, we reject the null hypothesis . Therefore statistically significant.
C . True . If the p-value is less than alpha, we reject the null hypothesis
D. True . Alpha will be greater than p-value . Therefore we will reject . 
 
        
             
        
        
        
Answer:
x=27
Step-by-step explanation:
i would give you the steps but honestly, im tired of giving 20 steps for every problem i answer.
 
        
             
        
        
        
Answer:
880
Step-by-step explanation:
2/5 times 2200
 
        
                    
             
        
        
        
Answer:
c
Step-by-step explanation:
its c