Answer:
c
Step-by-step explanation:
Answer:
to me the answer will be 5 raised to power 2
Okay, this is not really an answer, but I think in 2020, we will be in the 20 trillions. O know that is not the answer you were looking for, but its all I got.
Number 52 does not belong because 52 is a prime number
Answer:
2580 ft-lb
Step-by-step explanation:
Water leaks out of the bucket at a rate of
Work done required to pull the bucket to the top of the well is given by integral
Here, function
is the total weight of the bucket and water
feet above the bottom of the well. That is,
is the initial height and
is the maximum height of well. That is,
Find the work done as,
![W=\int_{a}^{b} F(x) d x](https://tex.z-dn.net/?f=W%3D%5Cint_%7Ba%7D%5E%7Bb%7D%20F%28x%29%20d%20x)
![=\int_{0}^{60}(46-0.1 x) dx](https://tex.z-dn.net/?f=%3D%5Cint_%7B0%7D%5E%7B60%7D%2846-0.1%20x%29%20dx)
![&\left.=46x-0.05 x^{2}\right]_{0}^{60}](https://tex.z-dn.net/?f=%26%5Cleft.%3D46x-0.05%20x%5E%7B2%7D%5Cright%5D_%7B0%7D%5E%7B60%7D)
![=(2760-180)-0[](https://tex.z-dn.net/?f=%3D%282760-180%29-0%5B)
![=2580 \mathrm{ft}-\mathrm{lb} ](https://tex.z-dn.net/?f=%3D2580%20%5Cmathrm%7Bft%7D-%5Cmathrm%7Blb%7D%0A)
Hence, the work done required to pull the bucket to the top of the well is ![2580 \mathrm{ft}- \mathrm{lb}](https://tex.z-dn.net/?f=2580%20%5Cmathrm%7Bft%7D-%20%5Cmathrm%7Blb%7D)