3. Eric filled 3/4 buckets with sand. Then he filled
1 answer:
Answer:
472 3/4
Step-by-step explanation:
Consider the meaning of "one, and one more". That does not mean zero (1-1). Rather, it means two (1+1).
__
Then 3/4 and 472 more is ...
Eric has 472 3/4 buckets filled with sand.
_____
The problem statement here seems to be focused on the filled buckets, rather than the sand stockpile that Eric is working from. The amount in that stockpile is being reduced by the amount that is being used to fill buckets. In short, whether you add or subtract depends on what you're trying to figure.
You might be interested in
To solve this we are going to use the kinematic equation for final velocity: 
where
is the final velocity
is the initial velocity
is the acceleration
is the time
We know for our problem that the the velocity at the beginning of the slope is
, so 
. We also know that the speed ad the bottom of the slope is 
, so 
. We also know that the acceleration is 
, so 
. Lets replace those values in our formula and solve for :
seconds
We can conclude that it takes the roller coaster 3 seconds to reach the bottom of the slope.
where
We know for our problem that the the velocity at the beginning of the slope is
We can conclude that it takes the roller coaster 3 seconds to reach the bottom of the slope.