kay4358
26.08.2019 •
Mathematics
Use the formula d=rt. find t for r=39.5 m/h and d=402.9m
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Ответ:
Ответ:
Step-by-step explanation:
we can solve the equations and see which one has a solution of
the first equation is:
i will chanche
for 
which is the same:
and clearing for p:
in this equation we gget that the solution is
which is the solution we where looking for.
and also, when the p is cleared in the other equations, a different result is obtained from the one desired
So the answer is: