Answer:
5.0 ft-lbf
Step-by-step explanation:
The force is
This force is not a constant force. For a non-constant force, the work done, <em>W</em>, is
with and the initial and final displacements respectively.
From the question, and .
Then
Evaluating the indefinite integral,
From the rules of integration,
Returning the limits,
Answer:
B. Walking burns calories at a rate of of 120 calories per hour.
Step-by-step explanation:
Hope this helps.
Consider the ordering
... -2 < -1
Now consider the ordering of their absolute values:
... 1 < 2
_____
Hopefully, you see that changing the sign reflects the sequence across the origin, so that the ordering is reversed when the signs are changed.
Answer:
6 and -6
Step-by-step explanation:
you multiply them together you get -36 and then you add them and get 0
Answer: $375
Step-by-step explanation:
Given : The probability of winning $100 : P(100)= 0.25
The probability of winning $200 : P(200)= 0.50
The probability of winning $1000 : P(1000)= 0.25
Now, the the expected value of that lottery ticket is given by :-
Hence, the the expected value of that lottery ticket =$375