For two weeks, jonah recorded the daily temperature variations in three cities, each in a different geographical region of the country. in the table, he noted the mean daily temperature for each city, in degrees fahrenheit, and the standard deviation (sd).
stepford mean = 58 sd = 5
angel grove mean = 85 sd = 3
bedrock mean = 72 sd = 2
use the information in the table to select the true statement.
a. bedrock is the least consistent in daily temperatures because its standard deviation is the lowest.
b. stepford is the least consistent in daily temperatures because its mean is the lowest.
c. angel grove is the least consistent in daily temperatures because its mean is the highest.
d. stepford is the least consistent in daily temperatures because its standard deviation is the highest.

A. Bedrock is the least consistent in daily temperatures because its standard deviation is the lowest.

Step-by-step explanation:

Given that for two weeks, Jonah recorded the daily temperature variations in three cities, each in a different geographical region of the country. In the table, he noted the mean daily temperature for each city, in degrees Fahrenheit, and the standard deviation (SD).  

Stepford Mean = 58 SD = 5  

Angel Grove Mean = 85 SD = 3  

Bedrock Mean = 72 SD = 2

Variation is more if variance is more then it is less consistent.

Hence we have option A as right

A. Bedrock is the least consistent in daily temperatures because its standard deviation is the lowest.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18