Answer: 4 gallons will be needed.
Step-by-step explanation:
The bottom of the pool is rectangular in shape. The formula for determining the area of a rectangle is expressed as
Area = Length × width
Olympic-sized swimming pool of uniform depth measures 50 meters by 21 meters. The area of the bottom would be
Area = 50 × 21 = 1050 m²
The bottom of the pool is to be treated with a sealer, and one gallon of the sealer covers 300 square feet of surface. This means that the number of gallons of sealer required for the job would be
1050/300 = 3.5gallons Approximately 4 gallons to the nearest gallon
I think it would be 1.5% but I'm not completely sure
Answer:
B
Step-by-step explanation:
The number of possible groups or combination of three men can be formed from 10 is 120.
According to the given question.
Total number of men in a company, n = 10.
Number of men to be selected, r = 3
As we know that, What is a combination in math?
Image result for what is combination
A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter.
Therefore, the number of possible groups or combination of three men can be formed from 10
= ![^{10} C_{3}](https://tex.z-dn.net/?f=%5E%7B10%7D%20C_%7B3%7D)
= 10!/ 3!7!
= 10(9)(8)/3(2)
= 5 × 3 × 8
= 120
The number of possible groups or combination of three men can be formed from 10 is 120.
Find out more information about number of possible groups or combination here:
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Let T be the number of teams after n rounds.
![T=128\times(\frac{1}{2})^{n}](https://tex.z-dn.net/?f=T%3D128%5Ctimes%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7Bn%7D)
When T = 16, we get:
![16=128\times(\frac{1}{2})^{n}](https://tex.z-dn.net/?f=16%3D128%5Ctimes%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7Bn%7D)
Dividing both sides by 128, we get:
![\frac{1}{8}=(\frac{1}{2})^{n}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B8%7D%3D%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7Bn%7D)
Therefore n = 3
The answer is 'after the third round'.