Eliminate 2nd equation from 1st equation here:
3y = -27
y = -27/3
y = -9
Now, substitute the value in 2nd equation, x - (-9) = 13
x + 9 = 13
x = 13 - 9 = 4
In short, Your Answer would be: (4, -9)
Hope this helps!
Answer:
Y=2
X=-1
Step-by-step explanation:
2*-1=-2
5*2=10
-2+10=8
————————-—
-x=1
3*2=6
6+1=7
Answer:
see explanation
Step-by-step explanation:
I will begin with part two, first.
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius.
Given
x² - 18x + y² - 10y = - 6
Using the method of completing the square
add ( half the coefficient of the x/ y terms )² to both sides
x² + 2(- 9)x + 81 + y² + 2(- 5)y + 25 = - 6 + 81 + 25, that is
(x - 9)² + (y - 5)² = 100 ← in standard form
with centre = (9, 5 ) and r = = 10
Answer:
x = -6
Step-by-step explanation:
x + 6 = -x - 6
2x = -12
x = -6
Answer:
A lurking variable is a variable that is not included as an explanatory or response variable in the analysis but can affect the interpretation of relationships between variables. A lurking variable can falsely identify a strong relationship between variables or it can hide the true relationship. For example, a research scientist studies the effect of diet and exercise on a person's blood pressure. Lurking variables that also affect blood pressure are whether a person smokes and stress levels.
In statistical models, the error term explains lurking variables that affect the process. To discover lurking variables, you must take the time to understand your data and the important variables that can affect a process. You can also create a plot of the data to look for non-linear trends that can identify the presence of lurking variables.