Answer:
1) 250 meters= 0.25 km
2) 12 meters= 0.012km
3) 1 meter= 0.001 km
The constant of proportionality is 1000 meters in 1km (1000 meters)
I think there’s a mistake on the second part because 1 meter does not equal to 1000km. but I did part 1 for you!
a) The average arithmetic mean is calculated by adding all of the values and then dividing the sum by the total number of values.

Which is 200.3.
b) Assume that the new average mean is 201, then

Solve for x.

Divide by 2604 to solve for x.

So the height of the new player is 175 cm.
Step-by-step explanation:
We can rewrite the given equation as

As a check, let's multiply out the factors:


and this is our original equation.