Answer:
And the determination coeffcient is just the correlation coeffcient square and we got:
And rounded to the nearest tenth thousand would be 0.1521
Step-by-step explanation:
The correlation coefficient is a measure of variability and is given by this formula:
![r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7Bn%28%5Csum%20xy%29-%28%5Csum%20x%29%28%5Csum%20y%29%7D%7B%5Csqrt%7B%5Bn%5Csum%20x%5E2%20-%28%5Csum%20x%29%5E2%5D%5Bn%5Csum%20y%5E2%20-%28%5Csum%20y%29%5E2%5D%7D%7D)
For this case we have
And the determination coeffcient is just the correlation coeffcient square and we got:
And rounded to the nearest tenth thousand would be 0.1521
A. The independent variable is time, as time is manipulating the value of her salary.
b. The dependent variable is her cost because what she charges for babysitting depends on how long she works.
c. y = 8x
y = how much she charges for this job
8 = the amount she charges per hour
x = number of hours babysat
Answer:
20% probability
Step-by-step explanation:
First, we need to calculate the area of all the figures inside the rectangle.
Area of triangle= 1/2 BH
So, 3x2=(6)
Area of Square= L^2
3x3=(9)
Area of rectangle= LxW
=60.
60+9+6= 75.
75 is the total area.
Now, lets find the added area of only the triangle and square.
9+6= 15
The probability will be 15/75=
Convert into percent form
= 20%
Hope this helps and please mark me brainliest :)
The formula of a slope:
We have the points (4, -4) and (k, -1) and the slope m = 34.
Substitute:
Answer:
1)
5 OVER THE SECOND POWER=25
6XDIVIDEDBY25=4.167
-4 OVER THE THIRD POWER=-64
-64DIVIDEDBY9X=-7.1
2) 7X+8(X-5)
8TIMESX=8X
8TIMES-5=-40
7XPLUS8X=15X
15XDIVIDEDBY-40==2.67
62-12=50
FOR #2THE SIGN WILL BE TURNED THE OTHER WAY.....
3) -12TIMES3/4=-16X
-12TIMES2=-24
-16XDIVIDEDBY-24=1.5
45+3=48
EVERYTHING IN BOLD IS THE AWSNERS I JUST SHOWED MY WORK HOPE THIS HELPS GOOD LUCK.....
