<span>The answer is 9,990 years. Using the exponential decay question, we can figure out how long it will take Plutonium-240 to decay from 27 grams to 9 grams. Setting the equation up looks like this, 9 = 27 e^ (-0.00011 t). From this you get, 0.333333 = e ^(-0.00011 t). Next, you simplify by dividing both sides by the natural log, -1.0986 = -0.00011 t. Finally, you solve by dividing both sides by -0.00011, giving 9,987 years for t, rounded up to 9,990 years.</span>
        
                    
             
        
        
        
Answer:
the scientific name is the same name around the world and if you use common names they are different around the world 
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Hello!  because if you multiply numbers with exponents you add the exponents.
because if you multiply numbers with exponents you add the exponents.
Now we've got .
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Sadly it has to be in exponential form. You can substitute  into the equation if you know a.
 into the equation if you know a.
 
        
             
        
        
        
On Monday he reads 2 pages, on Tuesday he reads 6 pages (triple of 2: 2 + 2 + 2 = 6), on Wednesday he reads 18 pages (triple of 6: 6 + 6+ 6 = 18), on Thursday he reads 54 pages (triple of 18: 18 + 18 + 18 = 54).