we know that
<u>The correlation coefficient</u> is a number between and that represent the linear dependence of two variables or sets of data
Using the function CORREL in a excel tool, calculate the correlation coefficient (r)
see the attached table
the correlation coefficient for the data in the table is equal to
therefore
<u>the answer is</u>
The answer is -17 hope this helps
(a) 0.50 per pound, you do 6 divided by 12
(b) 9.17 pounds per field, you do 55 divided by 6
Firstly , we will locate centres and radius in the figures
(a)
We can see that
centre=(h,k)=(0,0)
radius=r=5
now, we can use standard equation of circle
we can plug values
we get
(b)
We can see that
centre=(h,k)=(5,4)
radius=r=3
now, we can use standard equation of circle
we can plug values
we get
(c)
We can see that
centre=(h,k)=(4,3)
radius=r=5
now, we can use standard equation of circle
we can plug values
we get
The denominator cannot be zero, so
is not in the domain of .
is defined only for , and we have
so there is no issue here.
By the same token, we need to have
Taking all the exclusions together, we find the domain of is the set
or equivalently, the interval .