Answer: About 17 hours
Step-by-step explanation:
1,203/70=17.18571429
17.18571429 is about 17 hours
Answer:
Change in position after 30 seconds will be
Step-by-step explanation:
Given:
Change on position in every 10 seconds = ![-1 \frac{3}{10}](https://tex.z-dn.net/?f=-1%20%5Cfrac%7B3%7D%7B10%7D)
To Find:
Change in position after 30 seconds = ?
Solution:
For every 10 seconds the team changes a distance of
feet
After first 10 seconds
The change in position will be
feet =
After next 10 seconds i.e., after 20 seconds
The change in position will be =
+
=>
After next 10 seconds i.e., after 30 seconds
The change in position will be =
+
=>
Answer:
2.4
Step-by-step explanation:
We have to find the mean first
![Mean = \frac{Sum}{No.\ of\ values}\\ = \frac{2+4+7+2+3+7+9+3+1+7}{10}\\ = \frac{45}{10}\\ = 4.5](https://tex.z-dn.net/?f=Mean%20%3D%20%5Cfrac%7BSum%7D%7BNo.%5C%20of%5C%20values%7D%5C%5C%20%3D%20%5Cfrac%7B2%2B4%2B7%2B2%2B3%2B7%2B9%2B3%2B1%2B7%7D%7B10%7D%5C%5C%20%3D%20%5Cfrac%7B45%7D%7B10%7D%5C%5C%20%3D%204.5)
Now we have to find deviations.
Note that the deviations are calculated by subtracting the mean from the value. The distance is always positive so the deviations will be positive
Value Deviation
2 2-4.5 = |-2.5| = 2.5
4 4-4.5 = |-0.5| = 0.5
7 7-4.5 = 2.5
2 2-4.5 = |-2.5| = 2.5
3 3-4.5 = |-1.5| = 1.5
7 7-4.5 = 2.5
9 9-4.5 = 4.5
3 3-4.5 = |-1.5| = 1.5
1 1-4.5 = |-3.5| = 3.5
7 7-4.5 = 2.5
The last step is to find the mean of deviations.
![Mean\ of\ deviations = \frac{(2.5+0.5+2.5+2.5+1.5+2.5+4.5+1.5+3.5+2.5}{10}\\ = \frac{24}{10} \\=2.4](https://tex.z-dn.net/?f=Mean%5C%20of%5C%20deviations%20%3D%20%5Cfrac%7B%282.5%2B0.5%2B2.5%2B2.5%2B1.5%2B2.5%2B4.5%2B1.5%2B3.5%2B2.5%7D%7B10%7D%5C%5C%20%3D%20%5Cfrac%7B24%7D%7B10%7D%20%5C%5C%3D2.4)
The mean absolute deviation of given data set is 2.4 ..