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-
Jo-12(x-032
Use the table to help you.
7
5
10
11
12
X-X (x - 2)2
-2
4
-4
16
1
1
2
4
9
Sum= 34
Round your answer to the nearest tenth.
O A. 6.8
O O O
B. 2.9
O C. 2.6
D. 8.5

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had

x-3y=4

step-by-step e

just get this app called photo math it should be able to do those

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96