Answer:it would take the plane 40 seconds
Step-by-step explanation:
if you multiply by two then you would be able to get 30 
like 15 times 2 and since it’s 15 miles to 20 seconds or 15:20 you would have to multiply by the same number.
 
        
             
        
        
        
Answer:
<h2>There remains 7/6 of pie.</h2>
Step-by-step explanation:
Givens
The remaining parts are 1/3 of one pie and 5/6 of the other pie.
To find how much pie is remaining, we just need to sum those fractions.

Therefore, there remains 7/6 of pie. They ate just 1/6.
 
        
             
        
        
        
Answer:
2.64575131106
Step-by-step explanation:
 
        
                    
             
        
        
        
That’s a very good question but i don’t know the answer however it may be animals
        
             
        
        
        
Answer:
<h2>181 440</h2>
Step-by-step explanation:
We have 9 choices for Choosing the first object 
               8 choices for Choosing the 2nd object 
               .
               .
               .
              3 choices for Choosing the seventh object
Therefore if we want to choose7 objects without replacement from 9 objects we have : 9×8×7×6×5×4×3 = 181 440
Also ,we can calculate it this way :
9P7 = 181 440