I think it’s 90 degrees
But idk
The mean of a sequence of numbers is the average.
The true statement is: 
The given parameters are:


The mean of a dataset is calculated as:

So, we have:

Multiply both sides by m

When the sequence is split into two, we have:


Where:

So, we have:

Hence, the true statement is: 
Read more about mean and averages at:
brainly.com/question/16217700
Answer: y= -1/4x+5
Step-by-step explanation:
A line that is perpendicular must have the opposite reciprocal.
What they said ^ I was just about to answer, but there’s popped up first lol