RoxanneDuartee
09.06.2021 •
Mathematics
What is the product of 1.0 x 102 and 1.8 x 103 expressed in scientific notation?
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Ответ:
assume the speed of Train A=x
For that of Train B=x+20
thus 3.5*(x+x+20)=378
then x=44
x+20=64
So the speed of train A and B are 44 and 64 mph, respectively.