The logarithmic expression of 4^(1/2) = 2 is 
<h3>How to rewrite the expression?</h3>
The expression is given as:
4^(1/2) = 2
Take the logarithm of both sides
log(4^(1/2)) = log(2)
Apply the change of base rule
1/2log(4) = log(2)
Divide both sides by log(4)
1/2 = log(2)/log(4)
Change the base

Rewrite as:

Hence, the logarithmic expression of 4^(1/2) = 2 is 
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Answer:
48 mph
Step-by-step explanation: Add 42mph and 54 mph and you get 96. To find the average of the two --- divide 96 by 2 and you get 48mph as the average speed for the entire trip.
<em>5</em><em> </em><em>will</em><em> </em><em>be</em><em> </em><em>your</em><em> </em><em>answer</em><em> </em><em>of</em><em> </em><em>this</em><em> </em><em>question</em><em> </em>
I think 6 1/2,but I could be wrong so take that with a grain of salt