Answer:
Angle 4 and Angle 1 are supplementary to each other.
Step-by-step explanation:
A line is 180°. Because angle 4 and angle 1 and right next to each other and they share a straight line, both of their angles should add up to 180°, making these two angles supplementary.
I hope this was helpful to you! If it was, please rate and press thanks! Have a fantastic day!
Answer:
x = 4 ± 
Step-by-step explanation:
Given
(x - 12)(x + 4) = 9 ← expand the left side using FOIL
x² - 8x - 48 = 9 ( ad 48 to both sides )
x² - 8x = 57
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 4)x + 16 = 57 + 16
(x - 4)² = 73 ( take the square root of both sides )
x - 4 = ±
( add 4 to both sides )
x = 4 ± 
Answer:
Option A)
Confidence interval decreases
Step-by-step explanation:
If we increase the sample size, then,
- The standard error of the interval decrease.
- If the standard error increase, the margin of error of the interval decrease.
- If the margin of error decreases, the width of the confidence level decreases, hence, the confidence interval become narrower.
Thus, the correct answer is
Option A)
Confidence interval decreases
Just remember that something outside the parentheses applies to everything inside.
Examples:
3 times (x + 2) . . . . . means . . . . . 3 times 'x' <u>plus</u> 3 times 2
a (b + c) . . . . . means . . . . . ab <u>plus</u> ac
4 (w + x + y + 2) . . . means . . . 4w + 4x + 4y + 8
When somebody gives you an equation that has parentheses in it,
the first thing you're always supposed to do is get rid of them.
With the examples I just gave you, you know how to do that now.
Answer:
the answer would be x = 3, 0
Step-by-step explanation:
as much as I would like to, I'm really not that good at explaining things