Factor 30y 2 z + 12yz 2 - 18yz. 6yz(5y + 2z - 3) 6y2z(5y + 2z - 3) 6y2z2(5y + 2z - 3)
2 answers:
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The angles look like
F- angles are corresponding angles.
Corresponding angles are congruent.
F- angles are corresponding angles.
Corresponding angles are congruent.
Answer:
For this distribution of test scores, the standard deviation is equal to the square root of 9
D) 9
Step-by-step explanation:
We need to know the standard deviation formula:
(1)
Where:
S: Standard deviation
sum: Summation
x: Sample values
Am: Arithmetic mean
n: Number of terms, in this case 3
Now, we need to know the arithmetic mean of the sample values: 2, 5 and 8
To know the standard deviation we need to have the summation of each term minus the arithmetic mean squared.
of each term:
Now, we can find the standard deviation:
The standard deviation is equal to the square root of 9