I believe its the first four after the decimal
Using it's concept, the standard deviation for the given data-set is of 8.22.
<h3>What are the mean and the standard deviation of a data-set?</h3>
- The mean of a data-set is given by the <u>sum of all values in the data-set, divided by the number of values</u>.
- The standard deviation of a data-set is given by the square root of the <u>sum of the differences squared between each observation and the mean, divided by the number of values</u>.
The mean for this problem is:
M = (17 + 26 + 28 + 9 + 30 + 29 + 6 + 21 + 23)/9 = 21
Hence the standard deviation is:
![S = \sqrt{\frac{(17-21)^2 + (26-21)^2 + (28-21)^2 + \cdots + (21-21)^2 + (23-21)^2}{9}} = 8.22](https://tex.z-dn.net/?f=S%20%3D%20%5Csqrt%7B%5Cfrac%7B%2817-21%29%5E2%20%2B%20%2826-21%29%5E2%20%2B%20%2828-21%29%5E2%20%2B%20%5Ccdots%20%2B%20%2821-21%29%5E2%20%2B%20%2823-21%29%5E2%7D%7B9%7D%7D%20%3D%208.22)
More can be learned about the standard deviation of a data-set at brainly.com/question/12180602
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Answer:
1. 3cm
2. 6m
Step-by-step explanation:
If all angles are right angles, it means that both lengths on the right side add up to the length on the left side.
For the first one, the length on the left is 7cm, and there are two lengths on the right: 4cm and an unknown we can call 'x'.
We know that both of the right lengths add to the left length so we can represent this as so:
4+x=7
To solve for x we can minus 4 from both sides:
x+4-4 = 7-4
x = 7 -4
x = 3cm
We can solve the second one in a similar fashion:
x + 6 = 12
x + 6 - 6 = 12 - 6
x = 12 - 6
x = 6m
Hope this helped!
Here is your answer mate
[36+(3*2)]/6
Apply bodmas
Brackets first
[36+6]/6. (As 3*2=6)
42/6. (As 36+6=42)
=7. (As 42divided by 6 =7)
“Therefore your answer is 7”
Hope it helps ☺️☺️☺️
Pls mark as brainliest
Y=3x+4 beacause the slope is m and b is the y-intercept