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Michael321
13.03.2020 •
Mathematics
How do you solve this equation 7-6x=41
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Ответ:
First, we need to get X by itself.
Subtract the 7 to both sides.
7-6x=41 ---> 6x = 34
Divide 6x on both sides to exclude the x, and make it by itself.
6x = 34 ---> 5.6
Therefore we can conclude the answer to this is 5.6
x = 5.6
Ответ:
9.5
Step-by-step explanation:
Find the sample variance for the data 9,12,9,14,6. Round the answer to one decimal place. Sample variance.
Step 1
We find the Mean of the numbers
Mean = Sum of terms/ Number of terms
Mean = 9+12+9+14+6/5
= 50/5
= 10
Step 2
We find the sample variance
Formula =
(x - Mean)²/n - 1
n = 5
= (9 - 10)²+(12 -10)²+(9- 10)²+(14-10)²+(6-10)²/5 - 1
= 1+ 4+ 1+ 16+16/5 - 1
= 38/5 - 1
= 38/4
= 9.5
Therefore, Sample variance = 9.5