translation means to take a shape and make another exact copy of it like on a graph on 1 side a square might be there and if the exact square on a different side so it is a translation.
Middel so lets say you have a group of numbers such as this group below
18 , 20 , 34 , 15 , 78 , 100 , 12 , 46 , 89
You put those #s is order from smallest to largest like this
12 , 15 , 18 , 20 ,...
The mean of a series of numbers is the average - calculated by added all the numbers in the series and dividing the sum by the number of numbers in the series. Given the set of numbers {1,2,3,4,5},...
18 is a number, not a word. And also, 18 is a composite number that is often used in problems. Numbers that are factors include 1,2,3,6,9,18. Multiples include 36, 72, and others.
It means-- something times something times something--or something raised to the third power.
Squared is something times something--or something to the second power.