-8 and -9 because it is negative
        
             
        
        
        
Answer:
9/40?
Step-by-step explanation:
 
        
                    
             
        
        
        
6 boys, ratio is boy:girl 2:3
        
             
        
        
        
Answer:
The frequency does not change with more trials
Step-by-step explanation:
To predict: the probability of the coin landing heads up
Solution:
Probability refers to the chances that an event will occur in an experiment. The value of probability lies between 0 and 1. 0 indicates impossible event and 1 indicates a sure event. The probability of an event can not be greater than 1.
When a coin is tossed, there are two possible outcomes: heads (H), tails (T).
In case of the probability of the coin landing heads up, the frequency does not change with more trials.