Answer:
2 : 3
Step-by-step explanation:
A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc diameter.
Answer: Let the diameter of the mini disc be 
while the diameter of the disc be 
. To get the ratio of the mini disc diameter to the disc diameter, we just simply have to divide the diameter of the mini disc by the diameter of the disc and then represent the fraction in ratio form. The ratio of the disc diameters is given by:
Ratio of the mini disc diameter to the disc diameter = Diameter of mini disc / diameter of disc
Ratio of the mini disc diameter to the disc diameter = 
Ratio of the mini disc diameter to the disc diameter = 2 : 3
Answer:
1296
Step-by-step explanation:
(1/6)^-4
6^4/1
1296/1
1296
What type of teacher would give a frustrating problem like this?!?
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,
![&\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)
Hence, the work done required to pull the bucket to the top of the well is 
