Where does that StartFraction ... mess come from? -- I've seen it in other questions.

Comparing that to the general quadratic formula

we see b=-10 (agreeing in both places) a=7 (two places), c=-2
Answer: 7x² - 10x - 2 = 0
Answer:
-16.4, (commutative property)
Step-by-step explanation:
(add, because they are both negatives) -5.2+(-8.4)= -13.6
Then add the (-2.8): -13.6 + (-2.8) = -16.4
Thats your first equation!!!
do the same thing for the other one, and by the way it the same answer.
Its commutative prop because its just switching positions and its adding negatives.
Answer:

Step-by-step explanation:
Given

Required
Use R code to determine the regression equation

First, write the following code in a R program
~

Next, run the program
See attachment for program and output
From the output, go to coefficients:
Check Estimate Std. column, you have the following:



implies that:
Intercept


Hence, the least square regression equation is:
The answer is 3 you add the two numbers before it