There will be seven spaces between the 1st and the 8th post.
The distance between posts is 20 meters
The distance between the 1st and the 8th post is 20×7 = 140 metres
The sample is not randomly chosen. if you call every tenth person in a sample of 40 people
then you have 10, 20, 30, 40
and your sample is 4 people
that seems pretty small. I hope this helps :) . Have a nice day!
I got 20.
I may have done it wrong so maybe wait until others have answered.
Answer:
That is foiling. You are just breaking the equation by solving it.
Hope that helps and feel free to ask me more questions :)
Brainliest??