Answer:
X= (300 s + 200 b + 42 d )mg
Step-by-step explanation:
Amount of spinach=300 ml
Amount of berries =200 ml
amount of dressing = 42 ml
Vitamin C in one ml of spinach = s mg
Vitamin C in 300 ml of spinach = 300 s mg
Vitamin C in one ml of berries=b mg
Vitamin C in 200 ml of berries = 200 b mg
Vitamin C in one ml of dressing = d mg
Vitamin C in 42 ml of dressing = 42 d mg
Let total vitamin C be = x
Then
X= (300 s + 200 b + 42 d )mg
is the required expression
 
 
        
             
        
        
        
Answer:
C) H0:μd=0 and Ha:μd≠
0
Null hypothesis:  
Alternative hypothesis: 
Step-by-step explanation:
A paired t-test is used to compare two population means where you have two samples in  which observations in one sample can be paired with observations in the other sample. For example  if we have Before-and-after observations (This problem) we can use it.  
Let put some notation  
x=value for the first shop , y = value for the second shop
The system of hypothesis for this case are:
Null hypothesis:  
Alternative hypothesis: 
Or equivalently :
Null hypothesis:  
Alternative hypothesis: 
Since we define the difference  and we obtain this:
 and we obtain this:
The second step is calculate the mean difference  
 
The third step would be calculate the standard deviation for the differences, and we got:
 
The 4 step is calculate the statistic given by :
 
The next step is calculate the degrees of freedom given by:
 
Now we can calculate the p value, since we have a two tailed test the p value is given by:
 
C) H0:μd=0 and Ha:μd≠
0
 
        
             
        
        
        
Answer:
width = 5.29 ft
Step-by-step explanation:
a² + 6² = 8²
a²  = 64 - 36
a² = 28
a = √28
a = 5.29 ft
 
        
                    
             
        
        
        
Answer:
Two Column Proofs. Two column proofs are organized into statement and reason columns. Each statement must be justified in the reason column. Before beginning a two column proof, start by working backwards from the "prove" or "show" statement. The reason column will typically include "given", vocabulary definitions, conjectures, and theorems.
Step-by-step explanation:
hope this helps :)