15÷3 and 24÷3
= 5:8 
hop u found this helpful
        
                    
             
        
        
        
 believe the answer is 8 because sulfur has 6 valence electrons and when it becomes sulfide it gains two electrons making it 6+2=8.
 
        
             
        
        
        
The second and the third one because first is the same as 3 4/7 and 81=3^4
        
                    
             
        
        
        
Answer:
1) Compares data that are in categories
2) Organises data into 4 groups of equal sizes and is often used to compare two sets of data. 
3) Used to see trends in data. 
4) Shows changes over time. 
5) Shows the frequency of data using equal intervals with no space between the bars. 
Step-by-step explanation:
1) Bar graph is used to compare data that are in categories
2) Box and whisker plot is used to organise data into 4 groups of equal size.
3) Line graph is basically used to see different trends.
4) Scatter plot is used to show changes that have occurred over time
5) Histogram is used to show the frequency of data using equal intervals with no space between the bars. 
 
        
             
        
        
        
Idk but ima try to figure it out ok