For the data set 7,5, 10, 11, 12, the mean, x, is 9. What is the standard
deviation?
The formula for the sample standard deviation is s
h (x-7).
Use the table to help you.
(x - 2)?
-
24
-
4
16
1011
12 4
12 39
Sum = 34
Round your answer to the nearest tenth.

Step-by-step explanation:

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the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is