JimmySample7
27.11.2019 •
Physics
Acar travels 30 km north in 25 min. and 40 km east in 35 min. what is the total time in hours? be careful to carry over the proper number of significant figures when you convert to hours.
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Ответ:
t = 1.0 hours
Explanation:
as we know that all the data is given here in 2 significant figures
so here we need to find the total time of the motion
that time must be in two significant figures
here we know that
so here total time is given as
Ответ:
2x+18+5x-9
2x+5x18-9
7x+9
7. 7
x= 1.4
hope it helps