Answer:
1.37 * 10^10 years.
Step-by-step explanation:
Billion = 9 zeroes
13.7 billion = 13.7 * 10^9 = 1.37 * 10^10.
 
        
             
        
        
        
Answer:
and that's on periodt.
Step-by-step explanation:
periodt. periodt. periodt.
 
        
                    
             
        
        
        
Answer:
Rob owes his father=-$15-$3= -$18
Step-by-step explanation:
Rob borrows $15 first and then $3.
Since we have to use negative integers, so
 -$15-$3= -$18
 
        
                    
             
        
        
        
In this problem, you are asked to translate this verbal expression into algebraic expression. Then you must simply this expression if possible.So for this problem, the algebraic expression is: 
1.2 ( w + u / 12) -> so simplifying this, will give us:
= 1.2w + 1.2*u/12
= 1.2w + u/10 would be the answer.