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nockturnal1993
16.01.2020 •
Mathematics
List the critical values of the related function. then solve the inequality. 1/x+4> 0. im having trouble with understanding the process .
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Ответ:
the solution is ]1/4, - infinity[
Ответ:
Step-by-step explanation:
Step one:
given data
we can express the given data mathematically as
John can paint 0.5room in 2/3 hours
let the part of the room he can paint in an hour be x
so
if he takes 2/3 hours to paint 0.5 room
then he will take 1 hour to paint x
cross multiply we have
x= 0.5/2/3
x=0.5*3/2
x= 1.5/2
x=0.75 part of the room
75/100= 15/20=3/4 part