ANSWER

EXPLANATION
The given rational function is 

We need to rationalize the denominator by multiplying both the numerator and the denominator by the conjugate of 

which is 

When we rationalize we obtain:

The denominator is now a difference of two squares:

We apply this property to get


This simplifies to 

Or

 
        
                    
             
        
        
        
Answer: 2x-y=15
Step-by-step explanation: can u be more detailin
 
        
             
        
        
        
Answer:
1a
2b
3a
4c
5c
6c
7a
8d
9b
10b
11a
12c
13b
14a
15a
Step-by-step explanation:
 
        
             
        
        
        
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.
 
        
                    
             
        
        
        
The probability is 0.8997.
We will use a z-score to answer this question.  z-scores are given by the formula

With our information, we have

Looking this up in a z-table (http://www.z-table.com) we see that the area to the left of this (everything less than, up to this value) is 0.8997.