Complete the chart to find the mean, variance and standard deviation. Remember to use commas and round numbers to the nearest tenth.
Х
Х
X-X
x-x²
v
1.45
= -357.5 =
The mean is
2.340
= -62.5
The median is
3. 400
= -2.5
The variance is
4. 825
= 422.5 =
The standard deviation is
ΣΧ=
X=
(X-X)2 = 310,225.2 n=

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

answer: options

step-by-step explanation:

answer: 819.89 miles across america

step-by-step explanation:

192/15 = 12.8.

12.8

step-by-step explanation:

192/15 is 12.8.

however, it says to round to the nearest foot, which would equal 13.