Step-by-step explanation:
angle ABC is a parallel to angle DEF
Answer:
can u copy the text and send it to help u
Answer:
y=5
Step-by-step explanation:
7y-y=6y
30/6 = 6y/6
5 = y
1)
x^2 + 4 = 0 Subtract 4 from each side
x^2 = -4
You cannot square a number to get a negative number. No real solution. (If you have learned about imaginary numbers, answer is 2i)
2)
<span>x^2+x-6=0 Factor. 3 and -2 add up to 1, and multiply to -6
(x+3)(x-2) = 0
Zero Product Property: Which numbers would put a zero in one of the parentheses?
x = -3 or x=2
3) </span><span>x^2-6x+7=0
Completing the Square:
Take half of b (-6), square it, and add/subtract that coefficient
x^2 - 6x + 9 - 9 + 7 = 0
(x -3)^2 - 2 = 0 Add 2 to both sides
(x-3)^2</span> = 2 Take the square root of both sides
<span>(x-3) = </span>√2 or -√2 Add 3 to both sides
<span>x = 3 + </span>√2 or 3 - √2<span>
</span>
Answer:
The equation of the regression line is: 
Step-by-step explanation:
Linear regression is a linear approach to modelling the relationship between a dependent variable and one or more independent variables.
Let X be the independent variable and Y be the dependent variable. We will define a linear relationship between these two variables as follows:
We have the the following data:
To find the line of best fit for the points, follow these steps:
Step 1: Find 
and 
as it was done in the table.
Step 2: Find the sum of every column:
Step 3: Use the following equations to find intercept a and slope b:
Step 4: Assemble the equation of a line
The graph of the regression line is:
