First, we calculate for the variance by dividing the given sum of the squared deviations by the number of data.
variance = (316) / 9 = 316/9
Then, get the square root of the answer to calculate for the standard deviation.
sd = sqrt (316/9) = 5.93
Thus, the standard deviation is approximately 5.93.
The sum of the expression (–x² + x) and (x² – 3x – 1) will be –2x – 1. Then the correct option is D.
<h3>What is Algebra?</h3>
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
The expression can be written as
(–x² + x) and (x² – 3x – 1)
Then the sum of the expression (–x² + x) and (x² – 3x – 1) will be
(–x² + x) + (x² – 3x – 1) = –2x – 1
Then the correct option is D.
More about the Algebra link is given below.
brainly.com/question/953809
#SPJ1
Answer:
so considering they bought and then printed they need to sell 40 to make even
Step-by-step explanation:
Answer:
30 your welcone...........
mark me brainliest
First: 5
Second: 8
Third: 14
Hope this helps! :)
~Zain