Answer:
The mean number of the children is 1.2
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Step-by-step explanation:
Given
Children: 0, 1, 2, 1, 2
Required
Determine the Mean number
The mean of a set is calculated as follows;
![Mean = \frac{\sum x}{n}](https://tex.z-dn.net/?f=Mean%20%3D%20%5Cfrac%7B%5Csum%20x%7D%7Bn%7D)
Where x is the given set and n is the number of sets
In this case, n = 5 children
Hence;
![Mean = \frac{0 + 1 + 2 + 1 + 2}{5}](https://tex.z-dn.net/?f=Mean%20%3D%20%5Cfrac%7B0%20%2B%201%20%2B%202%20%2B%201%20%2B%202%7D%7B5%7D)
![Mean = \frac{6}{5}](https://tex.z-dn.net/?f=Mean%20%3D%20%5Cfrac%7B6%7D%7B5%7D)
![Mean = 1.2](https://tex.z-dn.net/?f=Mean%20%3D%201.2)
<em>Hence, the mean number of the children is 1.2</em>
Answer:
The times in seconds it took 6 finalists to run a 100 meter dash are 12.5 12.4 12.4 12.3 12.6 and 12.4. Mr. Brown picks out the time that appears the most to find the <u>mode</u> he arranges the times in increasing order and picks the middle value to find the <u>median</u>
Answer:
The element you add is ![b^2 / 4a](https://tex.z-dn.net/?f=b%5E2%20%2F%204a)
Step-by-step explanation:
The element you add is ![b^2 / 4a](https://tex.z-dn.net/?f=b%5E2%20%2F%204a)
Remember that
![a x^2 + bx +c \\= a ( x^2 +(b/a)x ) + c](https://tex.z-dn.net/?f=a%20x%5E2%20%2B%20bx%20%2Bc%20%20%5C%5C%3D%20a%20%28%20x%5E2%20%2B%28b%2Fa%29x%20%29%20%2B%20c)
So, in order to complete the square you add ![(b/2a)^2](https://tex.z-dn.net/?f=%28b%2F2a%29%5E2)
But when you multiply times
you get
![b^2 / 4a](https://tex.z-dn.net/?f=b%5E2%20%2F%204a)
Answer:
Slope : -1/4
y-intercept : -9
x... 0 , 1
y... -9 , -37/4
Step-by-step explanation: Graph the line using the slope and y-intercept, or two points. GRAPH IS DOWN BELOW!
Hope this helps you out.