The simplified mathematical expressions with the first factor to the nearest tenth are:
 7.8 x 10
3.3 x 
2.1 x 
3.7
<h3>What are the 
simplified mathematical expressions ?</h3>
Scientific notation is used to simplify large numbers in smaller numbers.  In order to write a number in scientific notation , the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10.
(8.6 x  ) . (9.1 x
) . (9.1 x  )
) 
= (8.6 x 9.1) x  
 
= 78.26 x 
 
= 7.8 x 10
(6.9 x  ) . (4.8 x
) . (4.8 x  )
) 
= 33.12 x 
3.3 x 
(3.7 x  ) . (4.6 x
) . (4.6 x  ) ÷ (1.4 x
) ÷ (1.4 x  ) . (5.7 x
) . (5.7 x  )
) 
= 1.7 x 10 ÷ 8 x10²
0.21 x 
2.1 x 
(3.1 x  ) . (5.3 x
) . (5.3 x  ) ÷ (7.3 x
) ÷ (7.3 x  ) . (6.1 x
) . (6.1 x  ) = 3.7
) = 3.7
To learn more about scientific notation, please check: brainly.com/question/25334755
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Answer:
 probility that fish is not black is 3/5 
Step-by-step explanation:
it' s because the full fraction is 5/5 minus 2/5 which is fish is black. so the left is 3/5 which is not black
 
        
             
        
        
        
Answer:
4 1/2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
$10,000
Step-by-step explanation:
Cross multiply and divide by 55.
Hope this helps!