To find the equation of a regression line, ý = ax + b, you need these formulas: a=TS
b = ý- až
A data set has an r-value of 0.553. If the standard deviation of the x-
coordinates is 3.996, and the standard deviation of the y-coordinates is 6.203,
what is the slope of the line to three decimal places?
A. 0.858
B. 0.356
O C. 1.165
D. 2.807

y=mx+b

step-by-step explanation:

m slope, b y-intercept

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

hi there!

the answer is: 2 and -2

step-by-step explanation:

case 1: an absolute value of positive number will still be a positive number

so absolute value of 2 is 2

case 2: an absolute value of negative number will be positive number so absolute value of -2 is 2