2 years ago

Look at the scatter plot and line of best fit below.

Mathematics

1 answer:

maw [93]2 years ago

7 0

Answer:

Look at the scatter plot and line of best fit below.

What estimated correlation coefficient (r) best describes

this data?

0 -0.2

O 0.6

0 1

-0.85

Step-by-step explanation:

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An arithmetic sequence with a thrid term of 8 and constant difference of 5

olga nikolaevna [1]

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=5\\
a_3=8\\
n=3
\end{cases}
\\\\\\
a_3=a_1+(3-1)5\implies 8=a_1+(2)5\implies 8=a_1+10
\\\\\\
\boxed{-2=a_1}
\\\\\\
a_n=-2+(n-1)5$