i have an algebra test tomorrow help! best answer 10 points?

[Wat IF?]

i know everything except rates. our teacher seemed to blab on and on today and it went in one ear out the other. Im in year 9 and i dont get them.

here is a question i dont get


change 72 litres per hour cm3 per second?

i dont even get it please explain

 

[ronnie]

The question reall is to
Change 72 litres per hour to "cm^3 per second"

1 litre per hour would be around 0.27 cm^3 per second

Taking that into consideration:

72 litres per hour would be around 20 cm^3 per second

Hope I helped

 

[Snoopy]

First, do what you need to in order to convert from liters to cm3. Then, divide the result by 3600. (You'll get litres per min the first time you divide by 60, and seconds the next time.)

 

[srweghr]

//////////
72l/hour*1000cc/l*hr/3600s=20cc/s

 

[mathematicko]

(72 L/h)(1h/3600 s)(1 m^3/L)(100cm/1m)^3 = 20,000 cm^3/s