Find the standard deviation of the set of data to the nearest tenth: 5, 8, 2, 9, 4

What is the first step of an indirect proof of a number that is divisible by two

We have enough material to build a fence around a station that has a perimeter of 180 feet the width of the rectangular space must be 3 1/4 feet what must the length be

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap