Aline segment has the endpoints s(1, 4) and t(7, 8). find the coordinates of its midpoint m.

M(4, 6)

given endpoints (x₁, y₁) and (x₂, y₂) then the coordinates of the midpoint is

M = [ (x₁ + x₂ ), (y₁ + y₂ )]

here (x₁, y₁) = (1, 4) and (x₂, y₂) = (7, 8)

M = [ (1 + 7 ), (4 + 8)] = (4, 6)

And replacing we got:

And the best option would be:

d) -2.5

Step-by-step explanation:

For this problem we know that the true mean of  trash every day is:

And from the info given we also know that:

represent the sample mean

sample size selected

the population standard deviation assumed

If we want to find the z score for the person we can use the following formula:

And replacing we got:

And the best option would be:

d) -2.5