Answer:
C
Step-by-step explanation:
If you have a Ti-84 series calculator, press "stat" then "Edit..." and then fill in the data table values for x and y in two lists. Then press "2nd" and "mode" to quit. Now press "stat" again and right arrow over to "calc" and press down until you find "ExpReg" and set the "Xlist" and "Ylist" that you used and you will get C as the answer. Another way to do this is to manually substitute values into all 4 equations, which is boring.
 
        
             
        
        
        
Answer:
42
Step-by-step explanation:
The formula for area is length multiplied by width
7 X 6 = 42
hope this helps :)
 
        
                    
             
        
        
        
The number of simple events in this experiment according to the probability is 16.
According to the statement
we have to find that the number of simple events in this experiment.
So, For this purpose, we know that the
Simple events are the events where one experiment happens at a time and it will be having a single outcome. The probability of simple events is denoted by P(E) where E is the event.
And according to the given information is:
Total number of coins tossed is 4.
then 
the simple events become 
Simple events = no. of coins * total coins tossed
Simple events = 4*4
Now solve it then
Simple events = 16.
So, The number of simple events in this experiment according to the probability is 16.
Learn more about simple events here
brainly.com/question/7965468
#SPJ4
 
        
             
        
        
        
There's only information to answer question C. 
We can only know that 32 marbles were chosen. (yellow and black)
Why?
To answer the first two questions (a and b), we need to know the total number of marbles, so, we can only answer the last question (c).
We know that 7/10 of the 20 yellow marbles were chosen.
So, calculating we have:

Also, we know that 18 black marbles were chosen, so, the total of marbles chosen is equal to 32 (yellow marbles and black marbles)

Have a nice day!