We know that
In statistics, the correlation coefficient r measures the strength and direction of a linear relationship between two variables on a scatterplot. The value of r is always between +1 and –1
using a excel tool
see the attached figure
<span>the r-value is -0.98534-------> -0.985
</span>
the answer is-0.985
Distributive property: ⇒ a(b+c)=ab+ac
First you had to rewrite down as the nine and its should be three times three is equal to nine. Then you rewrite down as the twenty-seven and its should be nine times three is equal to twenty-seven. Next, you rewrite down as fifteen and its should be five times three is equal to fifteen.
And it gave us ⇒ 
.
Then you had to factor out by the common term of three.
And it gave us ⇒ 
Final answer ⇒ 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
-6 and 8
-6+8=2
(-6)(8)=-48
we know that
If the only factors a polynomial are 
and itself, then that polynomial is prime.
so
If the polynomial has at least one root (one x-intercept) then the polynomial is not prime
Using a graph tool
<u>case 1) </u>
see the attached figure N 1
The polynomial has one root-------> the polynomial is not prime
<u>case 2) </u>
see the attached figure N 2
The polynomial has three roots-------> the polynomial is not prime
<u>case 3) </u>
see the attached figure N 3
The polynomial has zero roots-------> the polynomial is prime
<u>case 4)</u>
see the attached figure N 4
The polynomial has two roots-------> the polynomial is not prime
therefore
<u>the answer is</u>
------> is prime
