The drain pipe can drain (1/2) of the tank in 1 hour.
The fill pipe can fill (1/6) of the tank in 1 hour.
Working together, the pipes will drain the tank in (1/2) - (1/6) hours.
(1/2) - (1/6) = (3/6) -(1/6) = (2/6) or (1/3) of an hour.
So, working together, it will take 3 hours.
I think I should be the last one
Answer:
D
Step-by-step explanation:
D would be the correct answer, assuming that this is showing layers of rock, with the crust being above A. D would be the layer with the oldest remains.
Answer:
<em> </em>
Step-by-step explanation:
Since 
is below 
, you would move the decimal right 
times.
That will get you to .
Since we moved it right two times, we get a number in between 
.
Scientific notation: 
.
