Answer:
For A its 10 Feet because if each  unit is 5 feet and there are 2 units then its 10 feet and then B is 35 because seven units means 5 x 7 then 35feet is the answer
 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
A sample size of 79 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of  , and a confidence level of
, and a confidence level of  , we have the following confidence interval of proportions.
, we have the following confidence interval of proportions.
 
In which
z is the zscore that has a pvalue of  .
.
For this problem, we have that:

The margin of error is:
 
95% confidence level
So  , z is the value of Z that has a pvalue of
, z is the value of Z that has a pvalue of  , so
, so  .
.  
What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.09?
A sample size of n is needed.
n is found when M = 0.09. So






Rounding up to the nearest whole number.
A sample size of 79 is needed.
 
        
             
        
        
        
Answer:solo quiero puntos :( 
Step-by-step explanation:
 
        
             
        
        
        
15.6 - 11.7 = 3.9 
3.9 ÷ 15.6 = .25
25% of change
        
             
        
        
        
Answer:
28 yards
Step-by-step explanation:
It's perimeter so you add (6x2)+(8x2) 
The x2 is because there's 2 of each side