Answer:
B
Step-by-step explanation:
Brainliest??? plzzzz <em>L</em>(-_-)7
 
        
                    
             
        
        
        
Answer:
20 + 4 + 40 + 9
Step-by-step explanation:
20 + 4 is 24 and 40 + 9 is 49, so it's pretty much the same thing.
 
        
             
        
        
        
Answer:
Red Cell is 300 times larger than the virus
Step-by-step explanation:
Size in scientific Notation
- Red Cell = 9 * 10^-6
 - Virus = 9 * 10^-8
 
Procedure.
- Count the number of zeros in the decimal
 - Red Cell = 5 ; virus = 7
 - And one more to each
 - Red Cell = 6; virus = 7
 - change the numbers to minus
 - Red Cell = -6 ; virus = - 7
 - The last row is the powers as shown above. 
 
Answer
9*10^-6/3 * 10^-8
3*10^(-6 - - 8)
3*10^(-  6 + 8)
3^10^2 or 300 times larger
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
by factorising ; 
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<em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helped</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>