<span>Earlier historians consider the Medial Period the 'Dark Ages' due to the absence of written records which could have survived, which would have shone some light on this otherwise unknown period in time. The Dark Ages are often thought to be the years between 500 and 1500 CE, between the endings of the Roman Empire and the beginnings of the Italian Renaissance.</span>
The US reported 58 220 American casualties in the Vietnam war, although it may be higher. The causalities of North Vietnamese and Vietcong troops definitely exceed more than American casualties.
When we have a 75% of the wound healed, we have the following area:
area of the wound=(100%-75%) (initial area) =25% (initial area)
In this case:
area of the wound=25%(80 cm²)=20 cm²
A(t)=80(10^-0.023t)
If A(t)=20
Then:
20=80(10^-0.023t)
10^-0.023t=20/80
10^-0.023t=0.25
log (10^-0.023t)=log 0.25
-0.023t log 10=log0.25 log 10=1
-0.023t=log0.25
t=log 0.25 /-0.023
t=26.176≈26
The wound be healed (75%) in 26 days
B.
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