Answer:
The correlation coefficient of the data set is -0.985
Step-by-step explanation:
We are supposed to find the correlation coefficient of the given data
x y
5 19
7 17
10 16
15 12
19 7
Formula:
Using calculator
r =-0.985
So, Option C is true
Hence the correlation coefficient of the data set is -0.985
Answer:
23
Step-by-step explanation:
|43|-|-20|
The absolute value bar means whats inside is positive
43 - 20
23
2×+y=0,
×-y=6
Add the 1st to the 2nd equation==> 3x +y-y=6+0==> 3x=6 & x=2
Plug 2 into any of the equation & you will get y=-4
Since these are both set equal to y the easiest way to solve is to set the equations equal to each other.
-2x + 3= -x-1
add 2x to both sides
3= x-1
add 1 to both sides
4=x
Answer:
It should be B- an=3n+1 because it seems to be adding one every time
Step-by-step explanation: