Answer:
the mean for the data set is 129.3
You can factor -80 as

So, we have

The square root of a product is the product of the square roots:

Since
and
, we have

I already answered that question, here's the link:
brainly.com/question/10534199.
But if you still want the explanation, here it is:
"So if we want to measure probability, you have to add, then divide, like this:
First

, which gives us 18.
Then we see, that 6 is 1/3 of 18, so we conclude.
The answer is 33.33%.
Hope this helped!"
Answer:
2nd option: 2y=6x+8 and y=3x+4
Step-by-step explanation:
If you divide the first by 2, you get the second equation.
This means that both equations plot an identical line (they lie on top of each other /also known as "coincide"). This means, that there are infinitely many solutions.
In 2D (x-y plane for example), straight lines can have no solutions if they have the same gradient/slope/ they are parallel and different y-intercepts, because they will never cross.
Here, they have same gradient and y-intercept so all points on the line are valid solutions to the equation
Answer:
7/16 = 0.4375
Step-by-step explanation:
sry