ANSWER
The greatest common factor is 

EXPLANATION
We want to find the greatest common factor of 

and

The prime factorizations are;

and

The product of the least powers of the common factors is the greatest common factor.
 
 
        
        
        
First term:  -9
Common difference:  7
a(n) = -9 + 7(n-1), for n = {1, 2, 3, ... }
Check:  what is the first term?  let n=1.   Then a(1) = -9 + 7(1-1) = -9.  
This is correct.
        
                    
             
        
        
        
B - 60 Shirts
15 percent is 3/20 of a whole, meaning that 1/20 of a whole would be 3. Then, multiply the 1/20 by its denominator. 
3*20= 60
        
                    
             
        
        
        
Answer:
 and
  and   
Step-by-step explanation:
Recall that  is a value of the function cosine for the special angles:
 is a value of the function cosine for the special angles:  and
 and   , then:
, then:

 
        
             
        
        
        
<u>Answer:</u>
5.65 cm
<u>Step-by-step explanation:</u>
We are given that the length of each leg of an isosceles right triangle is 4 cm and we are to find the length of the hypotenuse.
For this, we will use the Pythagoras Theorem:

where  is the hypotenuse.
 is the hypotenuse.



Therefore, the length of the hypotenuse is 5.65 cm.