Answer:
3/1 = 3
Step-by-step explanation:
reciprocal of 1/3 = 3/1
Hope it helps you in your learning process.
 
        
             
        
        
        
Answer:
11, 13 and 15.
Step-by-step explanation:
Let's say that the odd number is "x". If x is for example 15, then the next ODD number would be 15+2=17 and the one after that would be 15+2+2=15+4=19. 
Applying that here, we get: 
Odd number* the next odd number*the next odd number=2145 
x*(x+2)*(x+4)=2145 
x*(x^2+4x+2x+8)=2145 
x^3+6x^2+8x=2145 
By solving the polynomial, you get x=11. 
Which makes our three numbers: 11, 13 and 15. 
11*13*15=2145. The answer checks.
 
        
             
        
        
        
Answer:
x squared plus two times x minus one = zero.
Step-by-step explanation:
(This is a Quadratic equation in the variable x).